diff --git a/lib/manager/github-actions/index.ts b/lib/manager/github-actions/index.ts
index 62ec7b3d9ca84820cdf1941f7bfd8dc88e31ecf7..7899690d2b26426a8c99ede660e0da434d45e17e 100644
--- a/lib/manager/github-actions/index.ts
+++ b/lib/manager/github-actions/index.ts
@@ -4,7 +4,7 @@ export { extractPackageFile };
 
 export const defaultConfig = {
   fileMatch: [
-    '^(workflow-templates|\\.github\\/workflows)\\/[^/]+\\.ya?ml$',
+    '(^workflow-templates|\\.github\\/workflows)\\/[^/]+\\.ya?ml$',
     '(^|\\/)action\\.ya?ml$',
   ],
 };