diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0af960e2..09f53bc4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -20,5 +20,6 @@ jobs:
           key: v1-dependencies-{{ checksum "yarn.lock" }}
 
       - run: yarn check-license-headers
+      - run: yarn format:check
       - run: yarn lint
       - run: yarn test
diff --git a/package.json b/package.json
index d6f11762..d24c1702 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
         "check-license-headers": "node ./scripts/checkLicenseHeaders.js",
         "lint": "eslint src/",
         "format": "prettier --write '**/*.{js,json,md,html,css}'",
+        "format:check": "prettier --check '**/*.{js,json,md,html,css}'",
         "release": "npm publish --access public",
         "test": "jest"
     },