diff --git a/go.mod b/go.mod
index 23a6067..d02ac5b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module alexejk.io/go-xmlrpc
 
-go 1.19
+go 1.21
 
 require github.com/stretchr/testify v1.8.4