diff --git a/go.mod b/go.mod
index 0bdc97f..f95fc2a 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/hatena/chi-middlewares
 
 go 1.22
 
-toolchain go1.22.3
+toolchain go1.23.2
 
 require (
 	github.com/go-chi/chi/v5 v5.0.12