diff --git a/.github/workflows/check-format.yml b/.github/workflows/check-format.yml
index 8c625eca46f3..e3227341e0e4 100644
--- a/.github/workflows/check-format.yml
+++ b/.github/workflows/check-format.yml
@@ -21,7 +21,7 @@ jobs:
       - name: Create NPM cache-hash input file
         run: |
           mkdir -p tmp
-          jq '{devDependencies, dependencies, engines, gitHubActionCacheKey}' package.json > tmp/package-ci.json
+          jq '{devDependencies, engines, gitHubActionCacheKey}' package.json > tmp/package-ci.json
 
       - uses: actions/setup-node@v4
         with:
@@ -29,5 +29,11 @@ jobs:
           cache: npm
           cache-dependency-path: tmp/package-ci.json
 
-      - name: Check file format
-        run: npm run check:format --ignore-scripts
+      - name: Install package(s)
+        run: |
+          PRETTIER_AT_VERS=@$(npm pkg get devDependencies.prettier | tr -d '^"')
+          echo "PRETTIER_AT_VERS=$PRETTIER_AT_VERS" | tee -a $GITHUB_ENV
+          npm install prettier$PRETTIER_AT_VERS --no-save
+          set -x && npx prettier --version
+
+      - run: npm run check:format
diff --git a/package.json b/package.json
index 780fba349406..41d1c2c58c83 100644
--- a/package.json
+++ b/package.json
@@ -6,10 +6,11 @@
   "scripts": {
     "__check:links": "make --keep-going check-links",
     "_build": "npm run _hugo -- -e dev --buildDrafts --baseURL \"${DEPLOY_PRIME_URL:-http://localhost}\"",
-    "_check:format:any": "npx prettier --check --ignore-path ''",
+    "__check:format": "npx prettier${PRETTIER_AT_VERS}",
+    "_check:format:any": "npm run __check:format -- --check --ignore-path ''",
     "_check:format:ja+zh": "npm run _check:format:nowrap -- content/ja content/zh",
     "_check:format:nowrap": "npm run _check:format:any -- --prose-wrap preserve",
-    "_check:format": "npx prettier --check .",
+    "_check:format": "npm run __check:format -- --check .",
     "_check:links--md": "npx markdown-link-check --config .markdown-link-check.json *.md",
     "_check:links--warn": "npm run _check:links || (echo; echo 'WARNING: see link-checker output for issues.'; echo)",
     "_check:links:internal": "npm run __check:links",
@@ -120,7 +121,7 @@
     "markdown-link-check": "^3.13.6",
     "markdownlint": "^0.36.1",
     "postcss-cli": "^11.0.0",
-    "prettier": "^3.4.2",
+    "prettier": "3.4.2",
     "require-dir": "^1.2.0",
     "textlint": "^14.4.0",
     "textlint-filter-rule-allowlist": "^4.0.0",