diff --git a/go.mod b/go.mod
index 0593b0f..8ef0ab2 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/mailgun/groupcache/v2
 
-go 1.21.5
+go 1.21
 
 require (
 	github.com/golang/protobuf v1.5.3