diff --git a/Cargo.lock b/Cargo.lock
index e58d0cb..a912de6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -489,6 +489,83 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
 
+[[package]]
+name = "axum"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "021e862c184ae977658b36c4500f7feac3221ca5da43e3f25bd04ab6c79a29b5"
+dependencies = [
+ "axum-core",
+ "bytes",
+ "form_urlencoded",
+ "futures-util",
+ "http 1.3.1",
+ "http-body",
+ "http-body-util",
+ "hyper",
+ "hyper-util",
+ "itoa",
+ "matchit",
+ "memchr",
+ "mime",
+ "percent-encoding",
+ "pin-project-lite",
+ "rustversion",
+ "serde",
+ "serde_json",
+ "serde_path_to_error",
+ "serde_urlencoded",
+ "sync_wrapper",
+ "tokio",
+ "tower",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
+[[package]]
+name = "axum-core"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68464cd0412f486726fb3373129ef5d2993f90c34bc2bc1c1e9943b2f4fc7ca6"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "http 1.3.1",
+ "http-body",
+ "http-body-util",
+ "mime",
+ "pin-project-lite",
+ "rustversion",
+ "sync_wrapper",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
+[[package]]
+name = "axum-extra"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45bf463831f5131b7d3c756525b305d40f1185b688565648a92e1392ca35713d"
+dependencies = [
+ "axum",
+ "axum-core",
+ "bytes",
+ "futures-util",
+ "headers",
+ "http 1.3.1",
+ "http-body",
+ "http-body-util",
+ "mime",
+ "pin-project-lite",
+ "rustversion",
+ "serde",
+ "tower",
+ "tower-layer",
+ "tower-service",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.75"
@@ -1565,6 +1642,7 @@ dependencies = [
  "http 1.3.1",
  "http-body",
  "httparse",
+ "httpdate",
  "itoa",
  "pin-project-lite",
  "smallvec",
@@ -1974,6 +2052,12 @@ dependencies = [
  "regex-automata 0.1.10",
 ]
 
+[[package]]
+name = "matchit"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47e1ffaa40ddd1f3ed91f717a33c8c0ee23fff369e3aa8772b9605cc1d22f4c3"
+
 [[package]]
 name = "md-5"
 version = "0.10.6"
@@ -3076,6 +3160,7 @@ dependencies = [
  "chrono-tz",
  "derive_more 2.0.1",
  "futures-util",
+ "http 1.3.1",
  "quick-xml",
  "rustical_dav",
  "rustical_dav_push",
@@ -3103,6 +3188,7 @@ dependencies = [
  "chrono",
  "derive_more 2.0.1",
  "futures-util",
+ "http 1.3.1",
  "quick-xml",
  "rustical_dav",
  "rustical_dav_push",
@@ -3124,10 +3210,13 @@ version = "0.1.0"
 dependencies = [
  "actix-web",
  "async-trait",
+ "axum",
+ "axum-extra",
  "derive_more 2.0.1",
  "futures-util",
  "headers",
  "http 0.2.12",
+ "http 1.3.1",
  "itertools 0.14.0",
  "log",
  "quick-xml",
@@ -3135,6 +3224,7 @@ dependencies = [
  "serde",
  "thiserror 2.0.12",
  "tokio",
+ "tower",
  "tracing",
  "tracing-actix-web",
 ]
@@ -3147,6 +3237,7 @@ dependencies = [
  "async-trait",
  "derive_more 2.0.1",
  "futures-util",
+ "http 1.3.1",
  "itertools 0.14.0",
  "log",
  "quick-xml",
diff --git a/Cargo.toml b/Cargo.toml
index 93251d0..54ebc58 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -86,7 +86,8 @@ sqlx = { version = "0.8", default-features = false, features = [
   "migrate",
   "json",
 ] }
-http = "0.2" # This version is used by actix-web
+http_02 = { package = "http", version = "0.2" } # actix-web uses a very outdated version
+http = "1.3"
 headers = "0.4"
 strum = "0.27"
 strum_macros = "0.27"
diff --git a/crates/caldav/Cargo.toml b/crates/caldav/Cargo.toml
index 366a60c..23fabda 100644
--- a/crates/caldav/Cargo.toml
+++ b/crates/caldav/Cargo.toml
@@ -29,3 +29,4 @@ rustical_xml.workspace = true
 uuid.workspace = true
 rustical_dav_push.workspace = true
 rustical_ical.workspace = true
+http.workspace = true
diff --git a/crates/caldav/src/calendar/methods/report/mod.rs b/crates/caldav/src/calendar/methods/report/mod.rs
index 91a1e6b..e674235 100644
--- a/crates/caldav/src/calendar/methods/report/mod.rs
+++ b/crates/caldav/src/calendar/methods/report/mod.rs
@@ -6,11 +6,11 @@ use crate::{
 };
 use actix_web::{
     HttpRequest, Responder,
-    http::StatusCode,
     web::{Data, Path},
 };
 use calendar_multiget::{CalendarMultigetRequest, get_objects_calendar_multiget};
 use calendar_query::{CalendarQueryRequest, get_objects_calendar_query};
+use http::StatusCode;
 use rustical_dav::{
     resource::{PrincipalUri, Resource},
     xml::{
diff --git a/crates/caldav/src/calendar/methods/report/sync_collection.rs b/crates/caldav/src/calendar/methods/report/sync_collection.rs
index 38f0731..b1a2b50 100644
--- a/crates/caldav/src/calendar/methods/report/sync_collection.rs
+++ b/crates/caldav/src/calendar/methods/report/sync_collection.rs
@@ -4,7 +4,7 @@ use crate::{
         CalendarObjectPropWrapper, CalendarObjectPropWrapperName, CalendarObjectResource,
     },
 };
-use actix_web::http::StatusCode;
+use http::StatusCode;
 use rustical_dav::{
     resource::{PrincipalUri, Resource},
     xml::{
diff --git a/crates/caldav/src/calendar/resource.rs b/crates/caldav/src/calendar/resource.rs
index ed83e68..e171066 100644
--- a/crates/caldav/src/calendar/resource.rs
+++ b/crates/caldav/src/calendar/resource.rs
@@ -322,7 +322,7 @@ impl<C: CalendarStore, S: SubscriptionStore> CalendarResourceService<C, S> {
     }
 }
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<C: CalendarStore, S: SubscriptionStore> ResourceService for CalendarResourceService<C, S> {
     type MemberType = CalendarObjectResource;
     type PathComponents = (String, String); // principal, calendar_id
@@ -331,6 +331,8 @@ impl<C: CalendarStore, S: SubscriptionStore> ResourceService for CalendarResourc
     type Principal = User;
     type PrincipalUri = CalDavPrincipalUri;
 
+    const DAV_HEADER: &str = "1, 3, access-control, calendar-access";
+
     async fn get_resource(
         &self,
         (principal, cal_id): &Self::PathComponents,
diff --git a/crates/caldav/src/calendar_object/resource.rs b/crates/caldav/src/calendar_object/resource.rs
index fdffd1f..29a8a04 100644
--- a/crates/caldav/src/calendar_object/resource.rs
+++ b/crates/caldav/src/calendar_object/resource.rs
@@ -137,7 +137,7 @@ pub struct CalendarObjectPathComponents {
     pub object_id: String,
 }
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<C: CalendarStore> ResourceService for CalendarObjectResourceService<C> {
     type PathComponents = CalendarObjectPathComponents;
     type Resource = CalendarObjectResource;
@@ -146,6 +146,8 @@ impl<C: CalendarStore> ResourceService for CalendarObjectResourceService<C> {
     type Principal = User;
     type PrincipalUri = CalDavPrincipalUri;
 
+    const DAV_HEADER: &str = "1, 3, access-control, calendar-access";
+
     async fn get_resource(
         &self,
         CalendarObjectPathComponents {
diff --git a/crates/caldav/src/calendar_set/mod.rs b/crates/caldav/src/calendar_set/mod.rs
index 4ba4ba9..d15ea14 100644
--- a/crates/caldav/src/calendar_set/mod.rs
+++ b/crates/caldav/src/calendar_set/mod.rs
@@ -77,7 +77,7 @@ impl<C: CalendarStore, S: SubscriptionStore> CalendarSetResourceService<C, S> {
     }
 }
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<C: CalendarStore, S: SubscriptionStore> ResourceService for CalendarSetResourceService<C, S> {
     type PathComponents = (String,);
     type MemberType = CalendarResource;
@@ -86,6 +86,8 @@ impl<C: CalendarStore, S: SubscriptionStore> ResourceService for CalendarSetReso
     type Principal = User;
     type PrincipalUri = CalDavPrincipalUri;
 
+    const DAV_HEADER: &str = "1, 3, access-control, extended-mkcol";
+
     async fn get_resource(
         &self,
         (principal,): &Self::PathComponents,
diff --git a/crates/caldav/src/error.rs b/crates/caldav/src/error.rs
index 71116e2..00bac42 100644
--- a/crates/caldav/src/error.rs
+++ b/crates/caldav/src/error.rs
@@ -71,7 +71,8 @@ impl actix_web::ResponseError for Error {
                 _ => StatusCode::INTERNAL_SERVER_ERROR,
             },
             Error::ChronoParseError(_) => StatusCode::INTERNAL_SERVER_ERROR,
-            Error::DavError(err) => err.status_code(),
+            Error::DavError(err) => StatusCode::try_from(err.status_code().as_u16())
+                .expect("Just converting between versions"),
             Error::Unauthorized => StatusCode::UNAUTHORIZED,
             Error::XmlDecodeError(_) => StatusCode::BAD_REQUEST,
             Error::NotImplemented => StatusCode::INTERNAL_SERVER_ERROR,
diff --git a/crates/caldav/src/principal/mod.rs b/crates/caldav/src/principal/mod.rs
index 41e94e7..57987dc 100644
--- a/crates/caldav/src/principal/mod.rs
+++ b/crates/caldav/src/principal/mod.rs
@@ -145,7 +145,7 @@ impl<AP: AuthenticationProvider, S: SubscriptionStore, CS: CalendarStore, BS: Ca
     }
 }
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<AP: AuthenticationProvider, S: SubscriptionStore, CS: CalendarStore, BS: CalendarStore>
     ResourceService for PrincipalResourceService<AP, S, CS, BS>
 {
@@ -156,6 +156,8 @@ impl<AP: AuthenticationProvider, S: SubscriptionStore, CS: CalendarStore, BS: Ca
     type Principal = User;
     type PrincipalUri = CalDavPrincipalUri;
 
+    const DAV_HEADER: &str = "1, 3, access-control";
+
     async fn get_resource(
         &self,
         (principal,): &Self::PathComponents,
diff --git a/crates/carddav/Cargo.toml b/crates/carddav/Cargo.toml
index 9afad59..5e30893 100644
--- a/crates/carddav/Cargo.toml
+++ b/crates/carddav/Cargo.toml
@@ -27,3 +27,4 @@ rustical_xml.workspace = true
 uuid.workspace = true
 rustical_dav_push.workspace = true
 rustical_ical.workspace = true
+http.workspace = true
diff --git a/crates/carddav/src/address_object/resource.rs b/crates/carddav/src/address_object/resource.rs
index 74af803..389780d 100644
--- a/crates/carddav/src/address_object/resource.rs
+++ b/crates/carddav/src/address_object/resource.rs
@@ -105,7 +105,7 @@ pub struct AddressObjectPathComponents {
     pub object_id: String,
 }
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<AS: AddressbookStore> ResourceService for AddressObjectResourceService<AS> {
     type PathComponents = AddressObjectPathComponents;
     type Resource = AddressObjectResource;
@@ -114,6 +114,8 @@ impl<AS: AddressbookStore> ResourceService for AddressObjectResourceService<AS>
     type Principal = User;
     type PrincipalUri = CardDavPrincipalUri;
 
+    const DAV_HEADER: &str = "1, 3, access-control, addressbook";
+
     async fn get_resource(
         &self,
         AddressObjectPathComponents {
diff --git a/crates/carddav/src/addressbook/methods/report/addressbook_multiget.rs b/crates/carddav/src/addressbook/methods/report/addressbook_multiget.rs
index 666e2ae..9dbee21 100644
--- a/crates/carddav/src/addressbook/methods/report/addressbook_multiget.rs
+++ b/crates/carddav/src/addressbook/methods/report/addressbook_multiget.rs
@@ -4,10 +4,9 @@ use crate::{
         AddressObjectPropWrapper, AddressObjectPropWrapperName, AddressObjectResource,
     },
 };
-use actix_web::{
-    dev::{Path, ResourceDef},
-    http::StatusCode,
-};
+use actix_web::dev::{Path, ResourceDef};
+
+use http::StatusCode;
 use rustical_dav::{
     resource::{PrincipalUri, Resource},
     xml::{MultistatusElement, PropfindType, multistatus::ResponseElement},
diff --git a/crates/carddav/src/addressbook/methods/report/sync_collection.rs b/crates/carddav/src/addressbook/methods/report/sync_collection.rs
index c2b3922..49dfe7d 100644
--- a/crates/carddav/src/addressbook/methods/report/sync_collection.rs
+++ b/crates/carddav/src/addressbook/methods/report/sync_collection.rs
@@ -4,7 +4,7 @@ use crate::{
         AddressObjectPropWrapper, AddressObjectPropWrapperName, AddressObjectResource,
     },
 };
-use actix_web::http::StatusCode;
+use http::StatusCode;
 use rustical_dav::{
     resource::{PrincipalUri, Resource},
     xml::{
diff --git a/crates/carddav/src/addressbook/resource.rs b/crates/carddav/src/addressbook/resource.rs
index f74bd33..04976d9 100644
--- a/crates/carddav/src/addressbook/resource.rs
+++ b/crates/carddav/src/addressbook/resource.rs
@@ -188,7 +188,7 @@ impl Resource for AddressbookResource {
     }
 }
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<AS: AddressbookStore, S: SubscriptionStore> ResourceService
     for AddressbookResourceService<AS, S>
 {
@@ -199,6 +199,8 @@ impl<AS: AddressbookStore, S: SubscriptionStore> ResourceService
     type Principal = User;
     type PrincipalUri = CardDavPrincipalUri;
 
+    const DAV_HEADER: &str = "1, 3, access-control, addressbook";
+
     async fn get_resource(
         &self,
         (principal, addressbook_id): &Self::PathComponents,
diff --git a/crates/carddav/src/error.rs b/crates/carddav/src/error.rs
index c60689e..07beb2b 100644
--- a/crates/carddav/src/error.rs
+++ b/crates/carddav/src/error.rs
@@ -38,7 +38,8 @@ impl actix_web::ResponseError for Error {
                 _ => StatusCode::INTERNAL_SERVER_ERROR,
             },
             Error::ChronoParseError(_) => StatusCode::INTERNAL_SERVER_ERROR,
-            Error::DavError(err) => err.status_code(),
+            Error::DavError(err) => StatusCode::try_from(err.status_code().as_u16())
+                .expect("Just converting between versions"),
             Error::Unauthorized => StatusCode::UNAUTHORIZED,
             Error::XmlDecodeError(_) => StatusCode::BAD_REQUEST,
             Error::NotImplemented => StatusCode::INTERNAL_SERVER_ERROR,
diff --git a/crates/carddav/src/principal/mod.rs b/crates/carddav/src/principal/mod.rs
index 92364c0..fb09d2e 100644
--- a/crates/carddav/src/principal/mod.rs
+++ b/crates/carddav/src/principal/mod.rs
@@ -140,7 +140,7 @@ impl Resource for PrincipalResource {
     }
 }
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<A: AddressbookStore, AP: AuthenticationProvider, S: SubscriptionStore> ResourceService
     for PrincipalResourceService<A, AP, S>
 {
@@ -151,6 +151,8 @@ impl<A: AddressbookStore, AP: AuthenticationProvider, S: SubscriptionStore> Reso
     type Principal = User;
     type PrincipalUri = CardDavPrincipalUri;
 
+    const DAV_HEADER: &str = "1, 3, access-control, addressbook";
+
     async fn get_resource(
         &self,
         (principal,): &Self::PathComponents,
diff --git a/crates/dav/Cargo.toml b/crates/dav/Cargo.toml
index a72cf0e..675ba40 100644
--- a/crates/dav/Cargo.toml
+++ b/crates/dav/Cargo.toml
@@ -7,9 +7,16 @@ repository.workspace = true
 publish = false
 
 [features]
-actix = ["dep:actix-web", "dep:tracing-actix-web"]
+actix = ["dep:actix-web", "dep:tracing-actix-web", "dep:http_02"]
+axum = ["dep:axum", "dep:axum-extra", "dep:tower"]
 
 [dependencies]
+axum = { version = "0.8", optional = true }
+axum-extra = { version = "0.10", optional = true, features = ["typed-header"] }
+tower = { version = "0.5", optional = true }
+
+http_02 = { workspace = true, optional = true }
+
 rustical_xml.workspace = true
 async-trait.workspace = true
 futures-util.workspace = true
diff --git a/crates/dav/src/error.rs b/crates/dav/src/error.rs
index e7b8e6c..e1d7b11 100644
--- a/crates/dav/src/error.rs
+++ b/crates/dav/src/error.rs
@@ -55,17 +55,40 @@ impl Error {
 
 #[cfg(feature = "actix")]
 impl actix_web::error::ResponseError for Error {
-    fn status_code(&self) -> StatusCode {
+    fn status_code(&self) -> actix_web::http::StatusCode {
         self.status_code()
+            .as_u16()
+            .try_into()
+            .expect("Just converting between versions")
     }
 
     fn error_response(&self) -> actix_web::HttpResponse {
+        use actix_web::ResponseError;
+
         error!("Error: {self}");
         match self {
-            Error::Unauthorized => actix_web::HttpResponse::build(self.status_code())
+            Error::Unauthorized => actix_web::HttpResponse::build(ResponseError::status_code(self))
                 .append_header(("WWW-Authenticate", "Basic"))
                 .body(self.to_string()),
-            _ => actix_web::HttpResponse::build(self.status_code()).body(self.to_string()),
+            _ => actix_web::HttpResponse::build(ResponseError::status_code(self))
+                .body(self.to_string()),
         }
     }
 }
+
+#[cfg(feature = "axum")]
+impl axum::response::IntoResponse for Error {
+    fn into_response(self) -> axum::response::Response {
+        use axum::body::Body;
+
+        let mut resp = axum::response::Response::builder().status(self.status_code());
+        if matches!(&self, &Error::Unauthorized) {
+            resp.headers_mut()
+                .expect("This must always work")
+                .insert("WWW-Authenticate", "Basic".parse().unwrap());
+        }
+
+        resp.body(Body::new(self.to_string()))
+            .expect("This should always work")
+    }
+}
diff --git a/crates/dav/src/header/depth.rs b/crates/dav/src/header/depth.rs
index 35ad1e2..4b47ede 100644
--- a/crates/dav/src/header/depth.rs
+++ b/crates/dav/src/header/depth.rs
@@ -1,7 +1,8 @@
 #[cfg(feature = "actix")]
 use actix_web::{HttpRequest, ResponseError};
+#[cfg(feature = "axum")]
+use axum::{body::Body, extract::FromRequestParts, response::IntoResponse};
 use futures_util::future::{Ready, err, ok};
-use http::StatusCode;
 use rustical_xml::{ValueDeserialize, ValueSerialize, XmlError};
 use thiserror::Error;
 
@@ -12,7 +13,17 @@ pub struct InvalidDepthHeader;
 #[cfg(feature = "actix")]
 impl ResponseError for InvalidDepthHeader {
     fn status_code(&self) -> actix_web::http::StatusCode {
-        StatusCode::BAD_REQUEST
+        http_02::StatusCode::BAD_REQUEST
+    }
+}
+
+#[cfg(feature = "axum")]
+impl IntoResponse for InvalidDepthHeader {
+    fn into_response(self) -> axum::response::Response {
+        axum::response::Response::builder()
+            .status(axum::http::StatusCode::BAD_REQUEST)
+            .body(Body::empty())
+            .expect("this always works")
     }
 }
 
@@ -81,3 +92,19 @@ impl actix_web::FromRequest for Depth {
         Self::extract(req)
     }
 }
+
+#[cfg(feature = "axum")]
+impl<S: Send + Sync> FromRequestParts<S> for Depth {
+    type Rejection = InvalidDepthHeader;
+
+    async fn from_request_parts(
+        parts: &mut axum::http::request::Parts,
+        state: &S,
+    ) -> Result<Self, Self::Rejection> {
+        if let Some(depth_header) = parts.headers.get("Depth") {
+            depth_header.as_bytes().try_into()
+        } else {
+            Ok(Self::Zero)
+        }
+    }
+}
diff --git a/crates/dav/src/lib.rs b/crates/dav/src/lib.rs
index 4bbfc08..b40fc83 100644
--- a/crates/dav/src/lib.rs
+++ b/crates/dav/src/lib.rs
@@ -9,6 +9,6 @@ pub mod xml;
 
 pub use error::Error;
 
-pub trait Principal: std::fmt::Debug + Clone + 'static {
+pub trait Principal: std::fmt::Debug + Clone + Send + Sync + 'static {
     fn get_id(&self) -> &str;
 }
diff --git a/crates/dav/src/resource/axum_methods.rs b/crates/dav/src/resource/axum_methods.rs
new file mode 100644
index 0000000..b9c3883
--- /dev/null
+++ b/crates/dav/src/resource/axum_methods.rs
@@ -0,0 +1,94 @@
+use axum::body::Body;
+use futures_util::future::BoxFuture;
+use headers::Allow;
+use http::{Method, Request, Response};
+use std::{convert::Infallible, str::FromStr, sync::Arc};
+
+pub type MethodFunction<Service> =
+    fn(Arc<Service>, Request<Body>) -> BoxFuture<'static, Result<Response<Body>, Infallible>>;
+
+pub trait AxumMethods: Sized + Send + Sync + 'static {
+    #[inline]
+    fn report() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn get() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn head() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn post() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn mkcol() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn mkcalendar() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn copy() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn mv() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn put() -> Option<MethodFunction<Self>> {
+        None
+    }
+
+    #[inline]
+    fn allow_header() -> Allow {
+        let mut allow = vec![
+            Method::from_str("PROPFIND").unwrap(),
+            Method::from_str("PROPPATCH").unwrap(),
+            Method::DELETE,
+            Method::OPTIONS,
+        ];
+        if Self::report().is_some() {
+            allow.push(Method::from_str("REPORT").unwrap());
+        }
+        if Self::get().is_some() {
+            allow.push(Method::GET);
+        }
+        if Self::head().is_some() {
+            allow.push(Method::HEAD);
+        }
+        if Self::post().is_some() {
+            allow.push(Method::POST);
+        }
+        if Self::mkcol().is_some() {
+            allow.push(Method::from_str("MKCOL").unwrap());
+        }
+        if Self::mkcalendar().is_some() {
+            allow.push(Method::from_str("MKCALENDAR").unwrap());
+        }
+        if Self::copy().is_some() {
+            allow.push(Method::from_str("COPY").unwrap());
+        }
+        if Self::mv().is_some() {
+            allow.push(Method::from_str("MOVE").unwrap());
+        }
+        if Self::put().is_some() {
+            allow.push(Method::PUT);
+        }
+
+        allow.into_iter().collect()
+    }
+}
diff --git a/crates/dav/src/resource/axum_service.rs b/crates/dav/src/resource/axum_service.rs
new file mode 100644
index 0000000..a361778
--- /dev/null
+++ b/crates/dav/src/resource/axum_service.rs
@@ -0,0 +1,120 @@
+use super::methods::{axum_route_propfind, axum_route_proppatch};
+use crate::resource::{ResourceService, axum_methods::AxumMethods};
+use axum::{
+    body::Body,
+    handler::Handler,
+    http::{Request, Response},
+    response::IntoResponse,
+};
+use futures_util::future::BoxFuture;
+use headers::HeaderMapExt;
+use http::{HeaderValue, StatusCode};
+use std::{convert::Infallible, sync::Arc};
+use tower::Service;
+
+#[derive(Clone)]
+pub struct AxumService<RS: ResourceService + AxumMethods> {
+    resource_service: Arc<RS>,
+}
+
+impl<RS: ResourceService + AxumMethods> AxumService<RS> {
+    pub fn new(resource_service: Arc<RS>) -> Self {
+        Self { resource_service }
+    }
+}
+
+impl<RS: ResourceService + AxumMethods + Clone + Send + Sync> Service<Request<Body>>
+    for AxumService<RS>
+where
+    RS::Error: IntoResponse + Send + Sync + 'static,
+{
+    type Error = Infallible;
+    type Response = Response<Body>;
+    type Future = BoxFuture<'static, Result<Self::Response, Self::Error>>;
+
+    #[inline]
+    fn poll_ready(
+        &mut self,
+        _cx: &mut std::task::Context<'_>,
+    ) -> std::task::Poll<Result<(), Self::Error>> {
+        Ok(()).into()
+    }
+
+    #[inline]
+    fn call(&mut self, req: Request<Body>) -> Self::Future {
+        use crate::resource::methods::axum_route_delete;
+        let mut propfind_service =
+            Handler::with_state(axum_route_propfind::<RS>, self.resource_service.clone());
+        let mut proppatch_service =
+            Handler::with_state(axum_route_proppatch::<RS>, self.resource_service.clone());
+        let mut delete_service =
+            Handler::with_state(axum_route_delete::<RS>, self.resource_service.clone());
+        let mut options_service = Handler::with_state(route_options::<RS>, ());
+        match req.method().as_str() {
+            "PROPFIND" => return Box::pin(Service::call(&mut propfind_service, req)),
+            "PROPPATCH" => return Box::pin(Service::call(&mut proppatch_service, req)),
+            "DELETE" => return Box::pin(Service::call(&mut delete_service, req)),
+            "OPTIONS" => return Box::pin(Service::call(&mut options_service, req)),
+            "REPORT" => {
+                if let Some(svc) = RS::report() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            "GET" => {
+                if let Some(svc) = RS::get() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            "HEAD" => {
+                if let Some(svc) = RS::head() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            "POST" => {
+                if let Some(svc) = RS::post() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            "MKCOL" => {
+                if let Some(svc) = RS::mkcol() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            "MKCALENDAR" => {
+                if let Some(svc) = RS::mkcalendar() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            "COPY" => {
+                if let Some(svc) = RS::copy() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            "MOVE" => {
+                if let Some(svc) = RS::mv() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            "PUT" => {
+                if let Some(svc) = RS::put() {
+                    return svc(self.resource_service.clone(), req);
+                }
+            }
+            _ => {}
+        };
+        Box::pin(async move {
+            Ok(Response::builder()
+                .status(StatusCode::METHOD_NOT_ALLOWED)
+                .body(Body::from("Method not allowed"))
+                .unwrap())
+        })
+    }
+}
+
+async fn route_options<RS: ResourceService + AxumMethods>() -> Response<Body> {
+    let mut resp = Response::builder().status(StatusCode::OK);
+    let headers = resp.headers_mut().unwrap();
+    headers.insert("DAV", HeaderValue::from_static(RS::DAV_HEADER));
+    headers.typed_insert(RS::allow_header());
+    resp.body(Body::empty()).unwrap()
+}
diff --git a/crates/dav/src/resource/methods/delete.rs b/crates/dav/src/resource/methods/delete.rs
index 3f6de3f..b743bf6 100644
--- a/crates/dav/src/resource/methods/delete.rs
+++ b/crates/dav/src/resource/methods/delete.rs
@@ -2,9 +2,17 @@ use crate::Error;
 use crate::privileges::UserPrivilege;
 use crate::resource::Resource;
 use crate::resource::ResourceService;
+#[cfg(feature = "axum")]
+use axum::extract::{Extension, Path, State};
+#[cfg(feature = "axum")]
+use axum_extra::TypedHeader;
 use headers::Header;
 use headers::{HeaderValue, IfMatch, IfNoneMatch};
+#[cfg(feature = "axum")]
+use http::HeaderMap;
 use itertools::Itertools;
+#[cfg(feature = "axum")]
+use std::sync::Arc;
 use tracing::instrument;
 
 #[cfg(feature = "actix")]
@@ -27,12 +35,12 @@ pub async fn actix_route_delete<R: ResourceService>(
     // while actix-web still uses http==0.2
     let if_match = req
         .headers()
-        .get_all(http::header::IF_MATCH)
+        .get_all(http_02::header::IF_MATCH)
         .map(|val_02| HeaderValue::from_bytes(val_02.as_bytes()).unwrap())
         .collect_vec();
     let if_none_match = req
         .headers()
-        .get_all(http::header::IF_NONE_MATCH)
+        .get_all(http_02::header::IF_NONE_MATCH)
         .map(|val_02| HeaderValue::from_bytes(val_02.as_bytes()).unwrap())
         .collect_vec();
 
@@ -49,7 +57,7 @@ pub async fn actix_route_delete<R: ResourceService>(
 
     route_delete(
         &path.into_inner(),
-        principal,
+        &principal,
         resource_service.as_ref(),
         no_trash,
         if_match,
@@ -60,9 +68,33 @@ pub async fn actix_route_delete<R: ResourceService>(
     Ok(actix_web::HttpResponse::Ok().body(""))
 }
 
+#[cfg(feature = "axum")]
+pub(crate) async fn axum_route_delete<R: ResourceService>(
+    Path(path): Path<R::PathComponents>,
+    State(resource_service): State<Arc<R>>,
+    Extension(principal): Extension<R::Principal>,
+    if_match: Option<TypedHeader<IfMatch>>,
+    if_none_match: Option<TypedHeader<IfNoneMatch>>,
+    header_map: HeaderMap,
+) -> Result<(), R::Error> {
+    let no_trash = header_map
+        .get("X-No-Trashbin")
+        .map(|val| matches!(val.to_str(), Ok("1")))
+        .unwrap_or(false);
+    route_delete(
+        &path,
+        &principal,
+        resource_service.as_ref(),
+        no_trash,
+        if_match.map(|hdr| hdr.0),
+        if_none_match.map(|hdr| hdr.0),
+    )
+    .await
+}
+
 pub async fn route_delete<R: ResourceService>(
     path_components: &R::PathComponents,
-    principal: R::Principal,
+    principal: &R::Principal,
     resource_service: &R,
     no_trash: bool,
     if_match: Option<IfMatch>,
@@ -70,7 +102,7 @@ pub async fn route_delete<R: ResourceService>(
 ) -> Result<(), R::Error> {
     let resource = resource_service.get_resource(path_components).await?;
 
-    let privileges = resource.get_user_privileges(&principal)?;
+    let privileges = resource.get_user_privileges(principal)?;
     if !privileges.has(&UserPrivilege::Write) {
         return Err(Error::Unauthorized.into());
     }
diff --git a/crates/dav/src/resource/methods/mod.rs b/crates/dav/src/resource/methods/mod.rs
index eea604d..9a45420 100644
--- a/crates/dav/src/resource/methods/mod.rs
+++ b/crates/dav/src/resource/methods/mod.rs
@@ -2,15 +2,17 @@ mod delete;
 mod propfind;
 mod proppatch;
 
-pub(crate) use delete::route_delete;
-pub(crate) use propfind::route_propfind;
-pub(crate) use proppatch::route_proppatch;
-
 #[cfg(feature = "actix")]
 pub(crate) use delete::actix_route_delete;
+#[cfg(feature = "axum")]
+pub(crate) use delete::axum_route_delete;
 
 #[cfg(feature = "actix")]
 pub(crate) use propfind::actix_route_propfind;
+#[cfg(feature = "axum")]
+pub(crate) use propfind::axum_route_propfind;
 
 #[cfg(feature = "actix")]
 pub(crate) use proppatch::actix_route_proppatch;
+#[cfg(feature = "axum")]
+pub(crate) use proppatch::axum_route_proppatch;
diff --git a/crates/dav/src/resource/methods/propfind.rs b/crates/dav/src/resource/methods/propfind.rs
index 89c5d5e..cbc1ad0 100644
--- a/crates/dav/src/resource/methods/propfind.rs
+++ b/crates/dav/src/resource/methods/propfind.rs
@@ -7,8 +7,11 @@ use crate::resource::ResourceService;
 use crate::xml::MultistatusElement;
 use crate::xml::PropfindElement;
 use crate::xml::PropfindType;
+#[cfg(feature = "axum")]
+use axum::extract::{Extension, OriginalUri, Path, State};
 use rustical_xml::PropName;
 use rustical_xml::XmlDocument;
+use std::sync::Arc;
 use tracing::instrument;
 
 #[cfg(feature = "actix")]
@@ -30,21 +33,46 @@ pub(crate) async fn actix_route_propfind<R: ResourceService>(
     route_propfind(
         &path.into_inner(),
         req.path(),
-        body,
-        user,
-        depth,
+        &body,
+        &user,
+        &depth,
         resource_service.as_ref(),
         puri.as_ref(),
     )
     .await
 }
 
+#[cfg(feature = "axum")]
+pub(crate) async fn axum_route_propfind<R: ResourceService>(
+    Path(path): Path<R::PathComponents>,
+    State(resource_service): State<Arc<R>>,
+    depth: Depth,
+    Extension(principal): Extension<R::Principal>,
+    uri: OriginalUri,
+    Extension(puri): Extension<R::PrincipalUri>,
+    body: String,
+) -> Result<
+    MultistatusElement<<R::Resource as Resource>::Prop, <R::MemberType as Resource>::Prop>,
+    R::Error,
+> {
+    route_propfind::<R>(
+        &path,
+        uri.path(),
+        &body,
+        &principal,
+        &depth,
+        resource_service.as_ref(),
+        &puri,
+    )
+    .await
+}
+
 pub(crate) async fn route_propfind<R: ResourceService>(
     path_components: &R::PathComponents,
     path: &str,
-    body: String,
-    user: R::Principal,
-    depth: Depth,
+    body: &str,
+    principal: &R::Principal,
+    depth: &Depth,
     resource_service: &R,
     puri: &impl PrincipalUri,
 ) -> Result<
@@ -52,7 +80,7 @@ pub(crate) async fn route_propfind<R: ResourceService>(
     R::Error,
 > {
     let resource = resource_service.get_resource(path_components).await?;
-    let privileges = resource.get_user_privileges(&user)?;
+    let privileges = resource.get_user_privileges(principal)?;
     if !privileges.has(&UserPrivilege::Read) {
         return Err(Error::Unauthorized.into());
     }
@@ -60,7 +88,7 @@ pub(crate) async fn route_propfind<R: ResourceService>(
     // A request body is optional. If empty we MUST return all props
     let propfind_self: PropfindElement<<<R::Resource as Resource>::Prop as PropName>::Names> =
         if !body.is_empty() {
-            PropfindElement::parse_str(&body).map_err(Error::XmlError)?
+            PropfindElement::parse_str(body).map_err(Error::XmlError)?
         } else {
             PropfindElement {
                 prop: PropfindType::Allprop,
@@ -68,7 +96,7 @@ pub(crate) async fn route_propfind<R: ResourceService>(
         };
     let propfind_member: PropfindElement<<<R::MemberType as Resource>::Prop as PropName>::Names> =
         if !body.is_empty() {
-            PropfindElement::parse_str(&body).map_err(Error::XmlError)?
+            PropfindElement::parse_str(body).map_err(Error::XmlError)?
         } else {
             PropfindElement {
                 prop: PropfindType::Allprop,
@@ -76,18 +104,18 @@ pub(crate) async fn route_propfind<R: ResourceService>(
         };
 
     let mut member_responses = Vec::new();
-    if depth != Depth::Zero {
+    if depth != &Depth::Zero {
         for (subpath, member) in resource_service.get_members(path_components).await? {
             member_responses.push(member.propfind_typed(
                 &format!("{}/{}", path.trim_end_matches('/'), subpath),
                 &propfind_member.prop,
                 puri,
-                &user,
+                principal,
             )?);
         }
     }
 
-    let response = resource.propfind_typed(path, &propfind_self.prop, puri, &user)?;
+    let response = resource.propfind_typed(path, &propfind_self.prop, puri, &principal)?;
 
     Ok(MultistatusElement {
         responses: vec![response],
diff --git a/crates/dav/src/resource/methods/proppatch.rs b/crates/dav/src/resource/methods/proppatch.rs
index c158c15..c3935c0 100644
--- a/crates/dav/src/resource/methods/proppatch.rs
+++ b/crates/dav/src/resource/methods/proppatch.rs
@@ -1,7 +1,10 @@
 use crate::Error;
 use crate::privileges::UserPrivilege;
+use std::sync::Arc;
 use crate::resource::Resource;
 use crate::resource::ResourceService;
+#[cfg(feature = "axum")]
+use axum::extract::{Extension, OriginalUri, Path, State};
 use crate::xml::MultistatusElement;
 use crate::xml::TagList;
 use crate::xml::multistatus::{PropstatElement, PropstatWrapper, ResponseElement};
@@ -74,8 +77,30 @@ pub(crate) async fn actix_route_proppatch<R: ResourceService>(
     route_proppatch(
         &path.into_inner(),
         req.path(),
-        body,
-        principal,
+        &body,
+        &principal,
+        resource_service.as_ref(),
+    )
+    .await
+}
+
+
+#[cfg(feature = "axum")]
+pub(crate) async fn axum_route_proppatch<R: ResourceService>(
+    Path(path): Path<R::PathComponents>,
+    State(resource_service): State<Arc<R>>,
+    Extension(principal): Extension<R::Principal>,
+    uri: OriginalUri,
+    body: String,
+) -> Result<
+    MultistatusElement<String, String>,
+    R::Error,
+> {
+    route_proppatch(
+        &path,
+        uri.path(),
+        &body,
+        &principal,
         resource_service.as_ref(),
     )
     .await
@@ -84,8 +109,8 @@ pub(crate) async fn actix_route_proppatch<R: ResourceService>(
 pub(crate) async fn route_proppatch<R: ResourceService>(
     path_components: &R::PathComponents,
     path: &str,
-    body: String,
-    principal: R::Principal,
+    body: &str,
+    principal: &R::Principal,
     resource_service: &R,
 ) -> Result<MultistatusElement<String, String>, R::Error> {
     let href = path.to_owned();
diff --git a/crates/dav/src/resource/mod.rs b/crates/dav/src/resource/mod.rs
index 9e81e21..2773e6f 100644
--- a/crates/dav/src/resource/mod.rs
+++ b/crates/dav/src/resource/mod.rs
@@ -12,12 +12,19 @@ use rustical_xml::{EnumVariants, NamespaceOwned, PropName, XmlDeserialize, XmlSe
 use std::collections::HashSet;
 use std::str::FromStr;
 
+#[cfg(feature = "axum")]
+mod axum_methods;
+#[cfg(feature = "axum")]
+mod axum_service;
 mod methods;
 mod principal_uri;
 mod resource_service;
 
+#[cfg(feature = "axum")]
+pub use axum_methods::AxumMethods;
+#[cfg(feature = "axum")]
+pub use axum_service::AxumService;
 pub use principal_uri::PrincipalUri;
-pub use resource_service::*;
 
 pub trait ResourceProp: XmlSerialize + XmlDeserialize {}
 impl<T: XmlSerialize + XmlDeserialize> ResourceProp for T {}
@@ -25,8 +32,8 @@ impl<T: XmlSerialize + XmlDeserialize> ResourceProp for T {}
 pub trait ResourcePropName: FromStr {}
 impl<T: FromStr> ResourcePropName for T {}
 
-pub trait Resource: Clone + 'static {
-    type Prop: ResourceProp + PartialEq + Clone + EnumVariants + PropName;
+pub trait Resource: Clone + Send + 'static {
+    type Prop: ResourceProp + PartialEq + Clone + EnumVariants + PropName + Send;
     type Error: From<crate::Error>;
     type Principal: Principal;
 
diff --git a/crates/dav/src/resource/principal_uri.rs b/crates/dav/src/resource/principal_uri.rs
index 2cb5a74..fe3c1b2 100644
--- a/crates/dav/src/resource/principal_uri.rs
+++ b/crates/dav/src/resource/principal_uri.rs
@@ -1,3 +1,3 @@
-pub trait PrincipalUri: 'static {
+pub trait PrincipalUri: 'static + Clone + Send + Sync {
     fn principal_uri(&self, principal: &str) -> String;
 }
diff --git a/crates/dav/src/resource/resource_service.rs b/crates/dav/src/resource/resource_service.rs
index d3e3848..45ea74f 100644
--- a/crates/dav/src/resource/resource_service.rs
+++ b/crates/dav/src/resource/resource_service.rs
@@ -2,28 +2,37 @@
 use super::methods::{actix_route_delete, actix_route_propfind, actix_route_proppatch};
 use super::{PrincipalUri, Resource};
 use crate::Principal;
+#[cfg(feature = "axum")]
+use crate::resource::{AxumMethods, AxumService};
 #[cfg(feature = "actix")]
 use actix_web::{http::Method, web, web::Data};
 use async_trait::async_trait;
 use serde::Deserialize;
-use std::str::FromStr;
+use std::{str::FromStr, sync::Arc};
 
-#[async_trait(?Send)]
-pub trait ResourceService: Sized + 'static {
+#[async_trait]
+pub trait ResourceService: Sized + Send + Sync + 'static {
+    type PathComponents: for<'de> Deserialize<'de> + Sized + Send + Sync + Clone + 'static; // defines how the resource URI maps to parameters, i.e. /{principal}/{calendar} -> (String, String)
     type MemberType: Resource<Error = Self::Error, Principal = Self::Principal>;
-    type PathComponents: for<'de> Deserialize<'de> + Sized + Clone + 'static; // defines how the resource URI maps to parameters, i.e. /{principal}/{calendar} -> (String, String)
     type Resource: Resource<Error = Self::Error, Principal = Self::Principal>;
-    type Error: From<crate::Error>;
+    type Error: From<crate::Error> + Send;
     type Principal: Principal;
     type PrincipalUri: PrincipalUri;
 
+    const DAV_HEADER: &'static str;
+
     async fn get_members(
         &self,
-        _path_components: &Self::PathComponents,
+        _path: &Self::PathComponents,
     ) -> Result<Vec<(String, Self::MemberType)>, Self::Error> {
         Ok(vec![])
     }
 
+    async fn test_get_members(&self, _path: &Self::PathComponents) -> Result<String, Self::Error> {
+        // ) -> Result<Vec<Self::MemberType>, Self::Error> {
+        Ok("asd".to_string())
+    }
+
     async fn get_resource(
         &self,
         _path: &Self::PathComponents,
@@ -69,4 +78,12 @@ pub trait ResourceService: Sized + 'static {
     where
         Self::Error: actix_web::ResponseError,
         Self::Principal: actix_web::FromRequest;
+
+    #[cfg(feature = "axum")]
+    fn axum_service(self) -> AxumService<Self>
+    where
+        Self: Clone + Send + Sync + AxumMethods,
+    {
+        AxumService::new(Arc::new(self))
+    }
 }
diff --git a/crates/dav/src/resources/root.rs b/crates/dav/src/resources/root.rs
index c410cdf..d900c4e 100644
--- a/crates/dav/src/resources/root.rs
+++ b/crates/dav/src/resources/root.rs
@@ -58,7 +58,7 @@ impl<PRS: ResourceService + Clone, P: Principal, PURI: PrincipalUri>
     }
 }
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<PRS: ResourceService<Principal = P> + Clone, P: Principal, PURI: PrincipalUri> ResourceService
     for RootResourceService<PRS, P, PURI>
 {
@@ -69,6 +69,8 @@ impl<PRS: ResourceService<Principal = P> + Clone, P: Principal, PURI: PrincipalU
     type Principal = P;
     type PrincipalUri = PURI;
 
+    const DAV_HEADER: &str = "1, 3, access-control";
+
     async fn get_resource(&self, _: &()) -> Result<Self::Resource, Self::Error> {
         Ok(RootResource::<PRS::Resource, P>::default())
     }
diff --git a/crates/dav/src/xml/multistatus.rs b/crates/dav/src/xml/multistatus.rs
index 69fdd64..665b455 100644
--- a/crates/dav/src/xml/multistatus.rs
+++ b/crates/dav/src/xml/multistatus.rs
@@ -124,3 +124,25 @@ impl<T1: XmlSerialize, T2: XmlSerialize> Responder for MultistatusElement<T1, T2
             .body(String::from_utf8(output).unwrap())
     }
 }
+
+#[cfg(feature = "axum")]
+impl<T1: XmlSerialize, T2: XmlSerialize> axum::response::IntoResponse
+    for MultistatusElement<T1, T2>
+{
+    fn into_response(self) -> axum::response::Response {
+        use axum::body::Body;
+        use http::header;
+
+        let mut output: Vec<_> = b"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".into();
+        let mut writer = quick_xml::Writer::new_with_indent(&mut output, b' ', 4);
+        if let Err(err) = self.serialize_root(&mut writer) {
+            return crate::Error::from(err).into_response();
+        }
+
+        let mut resp = axum::response::Response::builder().status(StatusCode::MULTI_STATUS);
+        resp.headers_mut()
+            .unwrap()
+            .insert(header::CONTENT_TYPE, "application/xml".try_into().unwrap());
+        resp.body(Body::from(output)).unwrap()
+    }
+}
diff --git a/crates/dav_push/Cargo.toml b/crates/dav_push/Cargo.toml
index 9752236..31eb391 100644
--- a/crates/dav_push/Cargo.toml
+++ b/crates/dav_push/Cargo.toml
@@ -23,3 +23,4 @@ reqwest.workspace = true
 tokio.workspace = true
 rustical_dav.workspace = true
 rustical_store.workspace = true
+http.workspace = true
diff --git a/crates/dav_push/src/notifier.rs b/crates/dav_push/src/notifier.rs
index 17de1c4..99e455d 100644
--- a/crates/dav_push/src/notifier.rs
+++ b/crates/dav_push/src/notifier.rs
@@ -1,4 +1,4 @@
-use actix_web::http::StatusCode;
+use http::StatusCode;
 use reqwest::{
     Method, Request,
     header::{self, HeaderName, HeaderValue},
diff --git a/crates/frontend/src/lib.rs b/crates/frontend/src/lib.rs
index 81d2839..8678f8b 100644
--- a/crates/frontend/src/lib.rs
+++ b/crates/frontend/src/lib.rs
@@ -335,7 +335,7 @@ pub fn configure_frontend<AP: AuthenticationProvider, CS: CalendarStore, AS: Add
 
 struct OidcUserStore<AP: AuthenticationProvider>(Arc<AP>);
 
-#[async_trait(?Send)]
+#[async_trait]
 impl<AP: AuthenticationProvider> UserStore for OidcUserStore<AP> {
     type Error = rustical_store::Error;
 
diff --git a/crates/oidc/src/user_store.rs b/crates/oidc/src/user_store.rs
index 8a380e5..40d5485 100644
--- a/crates/oidc/src/user_store.rs
+++ b/crates/oidc/src/user_store.rs
@@ -1,7 +1,7 @@
 use actix_web::ResponseError;
 use async_trait::async_trait;
 
-#[async_trait(?Send)]
+#[async_trait]
 pub trait UserStore: 'static {
     type Error: ResponseError;
 
diff --git a/crates/store/src/auth/mod.rs b/crates/store/src/auth/mod.rs
index 9a345cb..5cf647b 100644
--- a/crates/store/src/auth/mod.rs
+++ b/crates/store/src/auth/mod.rs
@@ -4,7 +4,7 @@ use crate::error::Error;
 use async_trait::async_trait;
 
 #[async_trait]
-pub trait AuthenticationProvider: 'static {
+pub trait AuthenticationProvider: Send + Sync + 'static {
     async fn get_principals(&self) -> Result<Vec<User>, crate::Error>;
     async fn get_principal(&self, id: &str) -> Result<Option<User>, crate::Error>;
     async fn remove_principal(&self, id: &str) -> Result<(), crate::Error>;
diff --git a/crates/xml/src/lib.rs b/crates/xml/src/lib.rs
index 725b5ca..6195fc7 100644
--- a/crates/xml/src/lib.rs
+++ b/crates/xml/src/lib.rs
@@ -41,6 +41,8 @@ pub trait EnumVariants {
 pub trait PropName: Sized {
     type Names: Into<(Option<Namespace<'static>>, &'static str)>
         + Clone
+        + Send
+        + Sync
         + From<Self>
         + FromStr<Err: std::fmt::Debug>
         + Hash