diff --git a/go.mod b/go.mod
index dba08eed..797f6735 100644
--- a/go.mod
+++ b/go.mod
@@ -61,7 +61,7 @@ require (
 	github.com/yudai/golcs v0.0.0-20170316035057-ecda9a501e82 // indirect
 	github.com/yudai/pp v2.0.1+incompatible // indirect
 	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
-	golang.org/x/tools v0.0.0-20190930201159-7c411dea38b0
+	golang.org/x/tools 479cc23432b1
 	gopkg.in/boj/redistore.v1 v1.0.0-20160128113310-fc113767cd6b
 	gopkg.in/redsync.v1 v1.0.1
 	gopkg.in/yaml.v2 v2.2.4