diff --git a/.github/workflows/ios_ci.yml b/.github/workflows/ios_ci.yml
--- a/.github/workflows/ios_ci.yml
+++ b/.github/workflows/ios_ci.yml
@@ -2,7 +2,7 @@
 
 on:
   push:
-    branches: [master]
+    branches: [master, CI]
     paths-ignore:
       - 'landing/**'
       - 'web/**'
@@ -66,3 +66,7 @@
       - name: Clean up keychain
         if: ${{ always() }}
         run: security delete-keychain $RUNNER_TEMP/app-signing.keychain-db
+
+      - name: Set up tmate session
+        if: failure() && github.ref == 'refs/heads/CI'
+        uses: mxschmitt/action-tmate@v3