diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index de5b78492416a90a3032081ea5d56ef2e8573e54..04babbe0fe4841afe4474f4878ef1193b684f0a2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,7 +12,7 @@ test-install-script:
   image: $TEST_IMAGE
   parallel:
     matrix:
-      - TEST_IMAGE: ["debian:10", "ubuntu:bionic", "ubuntu:focal", "ubuntu:jammy"]
+      - TEST_IMAGE: ["debian:10", "ubuntu:focal", "ubuntu:jammy", "debian:11"]
   interruptible: true
   before_script:
     - apt-get update && apt-get install -y curl