diff --git a/Cargo.toml b/Cargo.toml
index 48a43f71..63792da6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,10 +11,10 @@ repository = "https://github.com/ruma/ruma-client-api"
 version = "0.1.0"
 
 [dependencies]
-ruma-api = "0.1.0"
-ruma-events = "0.2.0"
+ruma-api = "0.2.0"
+ruma-events = "0.3.0"
 ruma-identifiers = "0.6.0"
 ruma-signatures = "0.1.0"
-serde = "0.8.19"
-serde_derive = "0.8.19"
+serde = "0.8.21"
+serde_derive = "0.8.21"
 serde_json = "0.8.4"
diff --git a/src/lib.rs b/src/lib.rs
index b966b9ff..c4aa85ba 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,7 +2,6 @@
 //! endpoint in the [Matrix](https://matrix.org/) client API specification. These types can be
 //! shared by client and server code.
 
-#![feature(proc_macro)]
 #![deny(missing_debug_implementations)]
 #![warn(missing_docs)]
 
diff --git a/src/r0/media.rs b/src/r0/media.rs
index efe68e69..b15e3925 100644
--- a/src/r0/media.rs
+++ b/src/r0/media.rs
@@ -82,7 +82,7 @@ pub mod get_content_thumbnail {
     pub struct Endpoint;
 
     /// The desired resizing method.
-    #[derive(Clone, Copy, Debug)]
+    #[derive(Clone, Copy, Debug, Deserialize, Serialize)]
     pub enum Method {
         /// Crop the original to produce the requested image dimensions.
         Crop,
@@ -100,7 +100,7 @@ pub mod get_content_thumbnail {
     }
 
     /// This API endpoint's query string parameters.
-    #[derive(Clone, Debug)]
+    #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct QueryParams {
         /// The *desired* height of the thumbnail. The actual thumbnail may not match the size
         /// specified.
diff --git a/src/r0/search.rs b/src/r0/search.rs
index f1ddf967..f5c14d29 100644
--- a/src/r0/search.rs
+++ b/src/r0/search.rs
@@ -141,7 +141,7 @@ pub mod search_events {
     }
 
     /// This API endpoint's query string parameters.
-    #[derive(Clone, Debug)]
+    #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct QueryParams {
         /// The point to return events from.
         ///