diff --git a/src/api/client_server/unversioned.rs b/src/api/client_server/unversioned.rs
index 797b9529..70e260ec 100644
--- a/src/api/client_server/unversioned.rs
+++ b/src/api/client_server/unversioned.rs
@@ -26,6 +26,7 @@ pub async fn get_supported_versions_route(
             "v1.2".to_owned(),
             "v1.3".to_owned(),
             "v1.4".to_owned(),
+            "v1.5".to_owned(),
         ],
         unstable_features: BTreeMap::from_iter([("org.matrix.e2e_cross_signing".to_owned(), true)]),
     };