diff --git a/webextensions/manifest/optional_permissions.json b/webextensions/manifest/optional_permissions.json
index e69ef872f2c678..299c3d58944bbd 100644
--- a/webextensions/manifest/optional_permissions.json
+++ b/webextensions/manifest/optional_permissions.json
@@ -475,6 +475,31 @@
             }
           }
         },
+        "nativeMessaging": {
+          "__compat": {
+            "description": "<code>nativeMessaging</code>",
+            "support": {
+              "chrome": {
+                "version_added": false
+              },
+              "edge": {
+                "version_added": false
+              },
+              "firefox": {
+                "version_added": "87"
+              },
+              "firefox_android": {
+                "version_added": false
+              },
+              "opera": {
+                "version_added": false
+              },
+              "safari": {
+                "version_added": false
+              }
+            }
+          }
+        },
         "notifications": {
           "__compat": {
             "description": "<code>notifications</code>",