--- extensions/common/api/runtime.json.orig	2021-09-24 04:26:06 UTC
+++ extensions/common/api/runtime.json
@@ -77,7 +77,7 @@
         "id": "PlatformOs",
         "type": "string",
         "description": "The operating system Chrome is running on.",
-        "enum": ["mac", "win", "android", "cros", "linux", "openbsd"]
+        "enum": ["mac", "win", "android", "cros", "linux", "freebsd", "openbsd"]
       },
       {
         "id": "PlatformArch",