diff --git a/go.mod b/go.mod
index 354cd3f8..45abb226 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/imroc/req/v3
 
-go 1.13
+go 1.15
 
 require (
 	github.com/hashicorp/go-multierror v1.1.1