diff --git a/go.mod b/go.mod
index c1a2401..b14d786 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/coopnorge/go-masker-lib
 
-go 1.20
+go 1.21
 
 require (
 	github.com/stretchr/testify v1.8.4