diff --git a/go.mod b/go.mod
index a00d5aab..eb0a9129 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/go-krb5/x
 
 go 1.25.0
 
-toolchain go1.26.0
+toolchain go1.26.3
 
 require (
 	github.com/google/uuid v1.6.0