diff --git a/contrib/docs/tutorials/authenticate-api-requests.md b/contrib/docs/tutorials/authenticate-api-requests.md
index 7842be6e98..4c44c8ae65 100644
--- a/contrib/docs/tutorials/authenticate-api-requests.md
+++ b/contrib/docs/tutorials/authenticate-api-requests.md
@@ -223,7 +223,7 @@ Install cookie-parser:
 
 ```bash
 # From your Backstage root directory
-yarn add --cwd packages/backend cookie-parser
+yarn add --cwd packages/backend cookie-parser @types/cookie-parser
 ```
 
 Create a custom configured `rootHttpRouterService` in `packages/backend/src/customRootHttpRouterService.ts`: