diff --git a/Cargo.lock b/Cargo.lock
index 0dc4bd9..ff45ffd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1952,7 +1952,6 @@ version = "0.1.0"
 dependencies = [
  "actix-web",
  "actix-web-httpauth",
- "derive_more 1.0.0",
  "futures-util",
  "password-auth",
  "serde",
@@ -2010,7 +2009,6 @@ dependencies = [
  "actix-web",
  "anyhow",
  "async-trait",
- "derive_more 1.0.0",
  "futures-util",
  "itertools",
  "log",
diff --git a/crates/auth/Cargo.toml b/crates/auth/Cargo.toml
index 4714b5e..a4d4a19 100644
--- a/crates/auth/Cargo.toml
+++ b/crates/auth/Cargo.toml
@@ -6,7 +6,6 @@ edition = "2021"
 [dependencies]
 actix-web = "4.9"
 actix-web-httpauth = "0.8"
-derive_more = "1.0"
 futures-util = "0.3"
 password-auth = "1.0"
 serde = { version = "1.0", features = ["derive"] }
diff --git a/crates/auth/src/error.rs b/crates/auth/src/error.rs
index 7c98e1d..352f9c4 100644
--- a/crates/auth/src/error.rs
+++ b/crates/auth/src/error.rs
@@ -1,15 +1,15 @@
 use actix_web::{http::StatusCode, HttpResponse};
-use derive_more::Display;
 use thiserror::Error;
 
-#[derive(Debug, Display, Error, Clone)]
+#[derive(Debug, Error, Clone)]
 pub enum Error {
-    #[display("Internal server error")]
+    #[error("Internal server error")]
     InternalError,
-    #[display("Not found")]
+    #[error("Not found")]
     NotFound,
-    #[display("Bad request")]
+    #[error("Bad request")]
     BadRequest,
+    #[error("Unauthorized")]
     Unauthorized,
 }
 
diff --git a/crates/dav/Cargo.toml b/crates/dav/Cargo.toml
index 22973b0..ca87654 100644
--- a/crates/dav/Cargo.toml
+++ b/crates/dav/Cargo.toml
@@ -7,7 +7,6 @@ edition = "2021"
 actix-web = "4.9"
 anyhow = "1.0"
 async-trait = "0.1"
-derive_more = "1.0"
 futures-util = "0.3"
 quick-xml = { version = "0.36", features = [
   "serde",
diff --git a/crates/dav/src/depth_extractor.rs b/crates/dav/src/depth_extractor.rs
index c5d4c43..0e4973f 100644
--- a/crates/dav/src/depth_extractor.rs
+++ b/crates/dav/src/depth_extractor.rs
@@ -1,8 +1,9 @@
 use actix_web::{http::StatusCode, FromRequest, HttpRequest, ResponseError};
-use derive_more::Display;
 use futures_util::future::{err, ok, Ready};
+use thiserror::Error;
 
-#[derive(Debug, Display)]
+#[derive(Error, Debug)]
+#[error("Invalid Depth header")]
 pub struct InvalidDepthHeader {}
 
 impl ResponseError for InvalidDepthHeader {