diff --git a/.github/workflows/test_example_system.yml b/.github/workflows/test_example_system.yml
index 8944fcc..a6e96f9 100644
--- a/.github/workflows/test_example_system.yml
+++ b/.github/workflows/test_example_system.yml
@@ -5,6 +5,9 @@ on: [push]
 jobs:
   run-pg-example:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash -l {0}
     strategy:
       max-parallel: 5
       matrix: