update go.mod
diff --git a/go.mod b/go.mod
index 2534331..0afe8e6 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,5 @@
 module github.com/hashicorp/go-multierror
 
+go 1.14
+
 require github.com/hashicorp/errwrap v1.0.0