diff --git a/README.md b/README.md
index 5b8eb60c6..4b8a5a54f 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ Installation
 
 #### pnpm
 ```bash
-pnpm add --dev @ember/test-helpers
+pnpm add --save-dev @ember/test-helpers
 ```
 
 #### npm