diff --git a/interop/firefox-version.json b/interop/firefox-version.json
index 9e8590ae9e..38db8f4073 100644
--- a/interop/firefox-version.json
+++ b/interop/firefox-version.json
@@ -2,6 +2,10 @@
   "id": "firefox-js-libp2p-head",
   "containerImageID": "firefox-js-libp2p-head",
   "transports": [
+    {
+      "name": "webtransport",
+      "onlyDial": true
+    },
     {
       "name": "webrtc-direct",
       "onlyDial": true