diff --git a/tasks/setup-Debian.yml b/tasks/setup-Debian.yml
index 23a49ae..eaaa96f 100644
--- a/tasks/setup-Debian.yml
+++ b/tasks/setup-Debian.yml
@@ -26,7 +26,9 @@
   when: add_repository_key is failed
 
 - name: Add Docker apt key (alternative for older systems without SNI).
-  shell: "curl -sSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -"
+  shell: |
+    set -o pipefail
+    curl -sSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   args:
     warn: false
   when: add_repository_key is failed