diff --git a/crates/caldav/src/calendar/methods/get.rs b/crates/caldav/src/calendar/methods/get.rs
index 9a09beb..f69843e 100644
--- a/crates/caldav/src/calendar/methods/get.rs
+++ b/crates/caldav/src/calendar/methods/get.rs
@@ -90,7 +90,7 @@ pub async fn route_get<C: CalendarStore, S: SubscriptionStore>(
 
     let mut resp = Response::builder().status(StatusCode::OK);
     let hdrs = resp.headers_mut().unwrap();
-    hdrs.typed_insert(ContentType::from_str("text/calendar").unwrap());
+    hdrs.typed_insert(ContentType::from_str("text/calendar; charset=utf-8").unwrap());
 
     let filename = format!("{}_{}.ics", calendar.principal, calendar.id);
     let filename = utf8_percent_encode(&filename, CONTROLS);
diff --git a/crates/caldav/src/calendar_object/methods.rs b/crates/caldav/src/calendar_object/methods.rs
index 4e3eb32..f91653c 100644
--- a/crates/caldav/src/calendar_object/methods.rs
+++ b/crates/caldav/src/calendar_object/methods.rs
@@ -42,7 +42,7 @@ pub async fn get_event<C: CalendarStore>(
     let mut resp = Response::builder().status(StatusCode::OK);
     let hdrs = resp.headers_mut().unwrap();
     hdrs.typed_insert(ETag::from_str(&event.get_etag()).unwrap());
-    hdrs.typed_insert(ContentType::from_str("text/calendar").unwrap());
+    hdrs.typed_insert(ContentType::from_str("text/calendar; charset=utf-8").unwrap());
     if matches!(method, Method::HEAD) {
         Ok(resp.body(Body::empty()).unwrap())
     } else {
diff --git a/crates/carddav/src/address_object/methods.rs b/crates/carddav/src/address_object/methods.rs
index a28aeb6..415d43c 100644
--- a/crates/carddav/src/address_object/methods.rs
+++ b/crates/carddav/src/address_object/methods.rs
@@ -50,7 +50,7 @@ pub async fn get_object<AS: AddressbookStore>(
     let mut resp = Response::builder().status(StatusCode::OK);
     let hdrs = resp.headers_mut().unwrap();
     hdrs.typed_insert(ETag::from_str(&object.get_etag()).unwrap());
-    hdrs.typed_insert(ContentType::from_str("text/vcard").unwrap());
+    hdrs.typed_insert(ContentType::from_str("text/vcard; charset=utf-8").unwrap());
     if matches!(method, Method::HEAD) {
         Ok(resp.body(Body::empty()).unwrap())
     } else {
diff --git a/crates/carddav/src/addressbook/methods/get.rs b/crates/carddav/src/addressbook/methods/get.rs
index ca5d881..3159243 100644
--- a/crates/carddav/src/addressbook/methods/get.rs
+++ b/crates/carddav/src/addressbook/methods/get.rs
@@ -46,7 +46,7 @@ pub async fn route_get<AS: AddressbookStore, S: SubscriptionStore>(
 
     let mut resp = Response::builder().status(StatusCode::OK);
     let hdrs = resp.headers_mut().unwrap();
-    hdrs.typed_insert(ContentType::from_str("text/vcard").unwrap());
+    hdrs.typed_insert(ContentType::from_str("text/vcard; charset=utf-8").unwrap());
     let filename = format!("{principal}_{addressbook_id}.vcf");
     let filename = utf8_percent_encode(&filename, CONTROLS);
     hdrs.insert(