diff --git a/README.md b/README.md
index 85aaf55..61ddff0 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ $ goop example.com
 ## Installation
 
 ```bash
-go get -u github.com/deletescape/goop
+GO111MODULE=on go get -u github.com/deletescape/goop
 ```
 
 ## How does it work?