diff --git a/src/r0/media/get_content_thumbnail.rs b/src/r0/media/get_content_thumbnail.rs
index 5090b419..532f153f 100644
--- a/src/r0/media/get_content_thumbnail.rs
+++ b/src/r0/media/get_content_thumbnail.rs
@@ -1,4 +1,4 @@
-//! [GET /_matrix/media/r0/thumbnail/{serverName}/{mediaId}](https://matrix.org/docs/spec/client_server/r0.4.0.html#get-matrix-media-r0-thumbnail-servername-mediaid)
+//! [GET /_matrix/media/r0/thumbnail/{serverName}/{mediaId}](https://matrix.org/docs/spec/client_server/r0.6.0#get-matrix-media-r0-thumbnail-servername-mediaid)
 
 use js_int::UInt;
 use ruma_api::ruma_api;
@@ -20,11 +20,16 @@ ruma_api! {
         method: GET,
         name: "get_content_thumbnail",
         path: "/_matrix/media/r0/thumbnail/:server_name/:media_id",
-        rate_limited: false,
+        rate_limited: true,
         requires_authentication: false,
     }
 
     request {
+        /// Whether to fetch media deemed remote.
+        ///
+        /// Used to prevent routing loops. Defaults to `true`.
+        #[ruma_api(query)]
+        pub allow_remote: Option<bool>,
         /// The media ID from the mxc:// URI (the path component).
         #[ruma_api(path)]
         pub media_id: String,
@@ -34,17 +39,20 @@ ruma_api! {
         /// The *desired* height of the thumbnail. The actual thumbnail may not match the size
         /// specified.
         #[ruma_api(query)]
-        pub height: Option<UInt>,
+        pub height: UInt,
         /// The desired resizing method.
         #[ruma_api(query)]
         pub method: Option<Method>,
         /// The *desired* width of the thumbnail. The actual thumbnail may not match the size
         /// specified.
         #[ruma_api(query)]
-        pub width: Option<UInt>,
+        pub width: UInt,
     }
 
     response {
+        /// The content type of the thumbnail.
+        #[ruma_api(header = CONTENT_TYPE)]
+        pub content_type: String,
         /// A thumbnail of the requested content.
         #[ruma_api(body)]
         pub file: Vec<u8>,