diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index db24ab2..b8f01b6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,7 @@ jobs:
           cache: 'pnpm'
 
       - name: Install dependencies
-        run: pnpm install
+        run: pnpm install --frozen-lockfile
 
       - name: Install Playwright browsers
         run: pnpm exec playwright install chromium --with-deps --only-shell
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8fcae05..498cb3e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -36,7 +36,7 @@ jobs:
           git config --local user.email "kettanaito@gmail.com"
 
       - name: Install dependencies
-        run: pnpm install
+        run: pnpm install --frozen-lockfile
 
       - name: Install Playwright browsers
         run: pnpm exec playwright install chromium --with-deps --only-shell