diff --git a/go.mod b/go.mod
index bd4a16e4..afcd6011 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,7 @@
 module github.com/helmfile/helmfile
 
 go 1.21
+toolchain go1.21.0
 
 require (
 	github.com/Masterminds/semver/v3 v3.2.1