diff --git a/.github/workflows/create-lock.yml b/.github/workflows/create-lock.yml
new file mode 100644
index 000000000..c4d96f540
--- /dev/null
+++ b/.github/workflows/create-lock.yml
@@ -0,0 +1,39 @@
+name: Create composer.lock
+
+on:
+  push:
+    tags:
+      - '*'
+    branches:
+      - test-create-lock
+
+jobs:
+  run:
+    runs-on: ubuntu-20.04
+
+    steps:
+
+      - name: Set env
+        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+
+      - uses: actions/checkout@v1
+
+      - uses: shivammathur/setup-php@v2
+        with:
+          coverage: none
+          php-version: 8.0
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v1
+        with:
+          path: ~/.composer/cache
+          key: ${{ runner.os }}-composer-cache-${{ hashFiles('**/composer.json') }}
+          restore-keys: ${{ runner.os }}-composer-cache-
+
+      - name: Build Thunder
+        run: |
+          composer create-project thunder/thunder-project thunder --no-interaction --no-install
+          cd thunder
+          composer require thunder/thunder-distribution:dev-${{ env.RELEASE_VERSION }} --no-install
+          composer update
+