diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 956ef7c..da1e2fe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -87,6 +87,7 @@ jobs:
       - name: Run examples
         id: run_examples
         run: |
+          set -ex
           mkdir /tmp/outgoing
           docker run --rm -u "$(id -u):$(id -g)" \
             -v "${{ github.workspace }}/examples/incoming:/incoming:ro" \