diff --git a/src/api/server_server.rs b/src/api/server_server.rs
index b0113352..87cf0e44 100644
--- a/src/api/server_server.rs
+++ b/src/api/server_server.rs
@@ -160,7 +160,7 @@ where
         .try_into_http_request::<Vec<u8>>(
             &actual_destination_str,
             SendAccessToken::IfRequired(""),
-            &[MatrixVersion::V1_4],
+            &[MatrixVersion::V1_5],
         )
         .map_err(|e| {
             warn!(