diff --git a/tool/sync_default_gems.rb b/tool/sync_default_gems.rb
index 28a1f963e8..17865b8afb 100755
--- a/tool/sync_default_gems.rb
+++ b/tool/sync_default_gems.rb
@@ -446,7 +446,7 @@ module SyncDefaultGems
     |[^\/]+\.yml
     |\.gitignore
     |\.git.*
-    |\.github/.*
+    |\.github\/.*
     |[A-Z]\w+file
     |COPYING
     |CONTRIBUTING\.md