diff --git a/WORKSPACE b/WORKSPACE
index 3f4978017e..932895cf33 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -5,7 +5,7 @@ load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_depe
 
 go_rules_dependencies()
 
-go_register_toolchains(version = "1.21")
+go_register_toolchains(version = "1.21.0")
 
 http_archive(
     name = "com_google_protobuf",