diff --git a/.github/workflows/nix_integration_tests.yaml b/.github/workflows/nix_integration_tests.yaml
index 6410b9a7..8cbb1e9f 100644
--- a/.github/workflows/nix_integration_tests.yaml
+++ b/.github/workflows/nix_integration_tests.yaml
@@ -30,6 +30,8 @@ jobs:
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
       env:
         USER: github_runner
+    - name: Setup tmate session
+      uses: mxschmitt/action-tmate@v3
     - name: Build
       run: nix develop .#test --command echo "Ok"
     - name: Python tests.