diff --git a/go.mod b/go.mod
index 0db2ff2..325937b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,7 @@
 module golang.org/x/net
 
+go 1.11
+
 require (
 	golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2
 	golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a