diff --git a/tests/ci/playbooks/roles/prepare-for-rally-task/tasks/main.yaml b/tests/ci/playbooks/roles/prepare-for-rally-task/tasks/main.yaml
index 620ddeee..0c7dfe4f 100644
--- a/tests/ci/playbooks/roles/prepare-for-rally-task/tasks/main.yaml
+++ b/tests/ci/playbooks/roles/prepare-for-rally-task/tasks/main.yaml
@@ -73,7 +73,7 @@
   become: True
   become_user: stack
   shell:
-    executable: /bin/sh
+    executable: /bin/bash
     cmd: |
       set -e