diff --git a/src/Routes/RouteCapabilities.c b/src/Routes/RouteCapabilities.c
index 8eb3866..8eaafcc 100644
--- a/src/Routes/RouteCapabilities.c
+++ b/src/Routes/RouteCapabilities.c
@@ -51,7 +51,7 @@ ROUTE_IMPL(RouteCapabilities, path, argp)
 
     /* TODO: When more room versions are implemented, add them to
      * roomVersions */
-    HashMapSet(roomVersions, "1", JsonValueString("unstable"));
+    HashMapSet(roomVersions, "1", JsonValueString("stable"));
 
     JsonSet(capabilities, JsonValueString("1"), 2, "m.room_versions", "default");
     JsonSet(capabilities, JsonValueObject(roomVersions), 2, "m.room_versions", "available");