diff --git a/.github/workflows/test-and-deploy.yml b/.github/workflows/test-and-deploy.yml
index 7c5f803..3333a69 100644
--- a/.github/workflows/test-and-deploy.yml
+++ b/.github/workflows/test-and-deploy.yml
@@ -21,7 +21,7 @@ jobs:
         run: npm install -g pnpm
 
       - name: Install dependencies
-        run: pnpm install
+        run: pnpm install --frozen-lockfile
 
       - name: Run tests
         run: npm run test
@@ -42,7 +42,7 @@ jobs:
         run: npm install -g pnpm
 
       - name: Install dependencies
-        run: pnpm install
+        run: pnpm install --frozen-lockfile
 
       - name: Build docs
         run: npm run docs:build