diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 19749a1..981e035 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -20,11 +20,11 @@ jobs:
         with:
           node-version: '20'
       - name: Install dependencies
-        run: npm ci
+        run: yarn install --frozen-lockfile
       - name: Lint code
-        run: npm run lint
+        run: yarn lint
       - name: Build library code
-        run: npm run build
+        run: yarn build
   check-versioning:
     runs-on: ubuntu-latest
     steps:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e51fa96..2574a33 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,11 +18,11 @@ jobs:
           registry-url: 'https://registry.npmjs.org/'
           scope: '@wertarbyte'
       - name: Install dependencies
-        run: npm ci
+        run: yarn install --frozen-lockfile
       - name: Lint code
-        run: npm run lint
+        run: yarn lint
       - name: Build library code
-        run: npm run build
+        run: yarn build
       - name: release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}