diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
index 7a656d6e..c4efd116 100644
--- a/.github/workflows/integration-tests.yml
+++ b/.github/workflows/integration-tests.yml
@@ -1,6 +1,8 @@
 name: Integration Tests
 
 on:
+  pull_request:
+    branches: [main]
   merge_group:
     types: [checks_requested]
   workflow_dispatch:
@@ -14,27 +16,42 @@ permissions:
 
 jobs:
   integration-tests:
-    runs-on: depot-ubuntu-24.04-16
+    name: integration-tests
+    runs-on: ubuntu-24.04
 
     steps:
+      - name: PR placeholder
+        if: github.event_name == 'pull_request'
+        run: echo "Integration tests run only in the merge queue."
+
       - name: Check out repository
+        if: github.event_name == 'merge_group' || github.event_name == 'workflow_dispatch'
         uses: actions/checkout@v6
 
       - name: Set up Python
+        if: github.event_name == 'merge_group' || github.event_name == 'workflow_dispatch'
         uses: actions/setup-python@v6
         with:
           python-version: "3.12"
 
       - name: Install Poetry
+        if: github.event_name == 'merge_group' || github.event_name == 'workflow_dispatch'
         run: python -m pip install --upgrade pip poetry
 
       - name: Show tool versions
+        if: github.event_name == 'merge_group' || github.event_name == 'workflow_dispatch'
         run: |
           python --version
           poetry --version
 
       - name: Install dependencies
+        if: github.event_name == 'merge_group' || github.event_name == 'workflow_dispatch'
         run: poetry install --with dev --no-interaction
 
+      - name: Build package
+        if: github.event_name == 'merge_group' || github.event_name == 'workflow_dispatch'
+        run: poetry build
+
       - name: Run integration tests
+        if: github.event_name == 'merge_group' || github.event_name == 'workflow_dispatch'
         run: poetry run pytest tests/integration