diff --git a/api/RTCDtlsTransport.json b/api/RTCDtlsTransport.json
index 3c9ea4c979e734..f4668088564664 100644
--- a/api/RTCDtlsTransport.json
+++ b/api/RTCDtlsTransport.json
@@ -55,7 +55,7 @@
               "version_added": "12"
             },
             "firefox": {
-              "version_added": false
+              "version_added": "154"
             },
             "firefox_android": "mirror",
             "oculus": "mirror",