diff --git a/docs/permissions/plugin-authors/03-adding-a-resource-permission-check.md b/docs/permissions/plugin-authors/03-adding-a-resource-permission-check.md
index e714301ded..103e463cda 100644
--- a/docs/permissions/plugin-authors/03-adding-a-resource-permission-check.md
+++ b/docs/permissions/plugin-authors/03-adding-a-resource-permission-check.md
@@ -91,7 +91,7 @@ This enables decisions based on characteristics of the resource, but it's import
 Install the missing module:
 
 ```bash
-$ yarn workspace @internal/plugin-todo-list-backend add @backstage/plugin-permission-node zod
+$ yarn workspace @internal/plugin-todo-list-backend add @backstage/plugin-permission-node zod@~3.18.0
 ```
 
 Create a new `plugins/todo-list-backend/src/service/rules.ts` file and append the following code: