diff --git a/api/Document.json b/api/Document.json
index 647285b5a002be..39f9c780b97147 100644
--- a/api/Document.json
+++ b/api/Document.json
@@ -257,7 +257,7 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": "147"
             },
             "firefox_android": "mirror",
             "oculus": "mirror",