diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 00000000..7e7b9265
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1,4 @@
+# CODEOWNERS file
+# This file defines who should review code changes in this repository.
+
+* @zendesk/ruby-core