diff --git a/mollie/mollie.go b/mollie/mollie.go
index dcd4b54..c850ee7 100644
--- a/mollie/mollie.go
+++ b/mollie/mollie.go
@@ -28,7 +28,7 @@ const (
 	RequestContentType   string = "application/json"
 	IdempotencyKeyHeader string = "Idempotency-Key"
 	ClientName           string = "MollieGoClient"
-	Version              string = "3.14.0"
+	Version              string = "4.0.0"
 )
 
 var (