diff --git a/go.mod b/go.mod
index 57a699b..b5b2910 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/int128/oauth2cli
 
 go 1.13
 
-toolchain go1.23.4
+toolchain go1.23.5
 
 require (
 	github.com/google/go-cmp v0.6.0
diff --git a/tools/go.mod b/tools/go.mod
index 5fb01e1..c45a6c4 100644
--- a/tools/go.mod
+++ b/tools/go.mod
@@ -1,6 +1,6 @@
 module github.com/int128/oauth2cli/tools
 
-go 1.23.4
+go 1.23.5
 
 require github.com/golangci/golangci-lint v1.63.4