diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a95066391320a6e9591228784671faa5c5056cc8..00e0d8ee972e70ed094cc606018e116e8544098d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,6 @@
 .test_job: &test_job
   stage: test
+  image: registry.gitlab.isc.org/isc-projects/images/bind9:debian-bullseye-amd64
   tags:
     - amd64
     - docker
@@ -7,18 +8,15 @@
 
 black:
   <<: *test_job
-  image: registry.gitlab.isc.org/isc-projects/images/bind9:debian-bullseye-amd64
   script:
     - black $(git ls-files '*.py')
 
 pylint:
   <<: *test_job
-  image: registry.gitlab.isc.org/isc-projects/images/bind9:debian-bullseye-amd64
   script:
     - find . -name "*.py" -execdir pylint {} +
 
 shellcheck:
   <<: *test_job
-  image: registry.gitlab.isc.org/isc-projects/images/bind9:debian-sid-amd64
   script:
     - find . -name "*.sh" -execdir shellcheck -x {} +