diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index eb932e2..c4b31d7 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Build website
         working-directory: ./
         run: |
-          yarn install --frozen-lockfile
+          yarn install --immutable
           yarn build
 
       # Popular action to deploy to GitHub Pages:
diff --git a/.github/workflows/test-deploy.yml b/.github/workflows/test-deploy.yml
deleted file mode 100644
index 3a455fa..0000000
--- a/.github/workflows/test-deploy.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-name: Test deployment
-
-on:
-  pull_request:
-    branches: [main]
-
-jobs:
-  test-deploy:
-    name: Test deployment
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@@v4
-      - uses: actions/setup-node@@v4
-        with:
-          node-version: 20.x
-          cache: yarn
-      - name: Test build
-        working-directory: ./
-        run: |
-          yarn install --frozen-lockfile
-          yarn build