diff --git a/go.mod b/go.mod
index 5d0acaf..6f9f5b7 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/Flagsmith/flagsmith-go-client/v3
 
-go 1.19
+go 1.21
 
 require (
 	github.com/blang/semver/v4 v4.0.0