diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 82c530e..f1794fe 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -34,7 +34,7 @@ jobs:
   platform-integration:
     name: CLI against Platform Docker Compose
     if: github.repository == 'rawtreedb/rawtree-cli' && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository)
-    runs-on: ubuntu-24.04-arm
+    runs-on: [arc-runner-set-platform-arm64]
     timeout-minutes: 90
     permissions:
       contents: read
@@ -69,6 +69,11 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
+      - name: Install native build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends pkg-config libssl-dev
+
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
 
diff --git a/README.md b/README.md
index 8840753..e2e6eb2 100644
--- a/README.md
+++ b/README.md
@@ -395,7 +395,8 @@ The job also requires `DOCKERHUB_USERNAME` and `DOCKERHUB_TOKEN` secrets to pull
 the private RawTree server, keeper, and backend images. Use a read-only Docker Hub
 token with access to those repositories.
 
-The integration job uses an ARM64 runner and reuses the published backend image
+The integration job uses Platform's `arc-runner-set-platform-arm64` runner pool.
+It reuses the published backend image
 only when its source revision is an ancestor of the checked-out Platform `main`
 and its backend release inputs are unchanged. It pulls the verified image by
 digest; if the inputs differ or revision metadata is missing, it builds from