diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e8cf7e2a..bef316a9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -11,7 +11,7 @@ git clone git@github.com:your-username/dd-lambda-go.git
 Make your change, update tests and ensure the tests pass:
 
 ```bash
-go test
+go test ./...
 ```
 
 Push to your fork and [submit a pull request][pr].