diff --git a/package.json b/package.json
index 2a62eab..f5d940e 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "test": "cd wrapper && npm test && cd .. && semistandard --env jest && jest --coverage",
     "lint": "cd wrapper && npm run lint && cd .. && semistandard --env jest --fix",
     "build": "cd wrapper && npm run build && cd .. && ncc build index.js --out dist",
-    "postinstall": "cd wrapper && npm install",
+    "postinstall": "cd wrapper && npm ci",
     "prepare": "husky install",
     "format-check": "echo \"unimplemented for actions/reusable-workflows basic-validation\""
   },