diff --git a/CODEOWNERS b/CODEOWNERS
index 07bda888b209dc..c5db991b4007a1 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -8,3 +8,6 @@
 # Require a review for Dockerfile
 tools/docker/Dockerfile @web-platform-tests/wpt-core-team @web-platform-tests/admins
 .taskcluster.yml @web-platform-tests/wpt-core-team @web-platform-tests/admins
+
+# Prevent accidentally touching wasm/core which is updated by a workflow
+wasm/core/ @web-platform-tests/wpt-core-team