diff --git a/agents/manifest.json b/agents/manifest.json
index e02e5ccea..b3f635bb5 100644
--- a/agents/manifest.json
+++ b/agents/manifest.json
@@ -36,7 +36,7 @@
     {
       "type": "extension",
       "name": "agora_rtm",
-      "version": "0.1.5"
+      "version": "=0.1.5"
     }
   ]
 }
\ No newline at end of file