diff --git a/go.mod b/go.mod
index b3025cc..7da11c1 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/int128/oauth2dev
 
 go 1.24.0
 
-toolchain go1.25.4
+toolchain go1.25.5
 
 require (
 	github.com/google/go-cmp v0.7.0