diff --git a/api/Permissions.json b/api/Permissions.json
index 7912c5a4336e4d..0a5ba7be890ec0 100644
--- a/api/Permissions.json
+++ b/api/Permissions.json
@@ -757,9 +757,17 @@
             },
             "chrome_android": "mirror",
             "edge": "mirror",
-            "firefox": {
-              "version_added": "126"
-            },
+            "firefox": [
+              {
+                "version_added": "126"
+              },
+              {
+                "version_added": "122",
+                "version_removed": "126",
+                "partial_implementation": true,
+                "notes": "The value is recognized, but has no effect."
+              }
+            ],
             "firefox_android": "mirror",
             "oculus": "mirror",
             "opera": "mirror",