diff --git a/.ci/ansible_install.py b/.ci/ansible_install.py
index 167a9cb1..b2da2702 100755
--- a/.ci/ansible_install.py
+++ b/.ci/ansible_install.py
@@ -14,7 +14,7 @@ batches = [
 ]
 
 batches.extend(
-    ['docker pull mitogen/%s-test' % (distro,)]
+    ['docker pull %s' % (ci_lib.image_for_distro(distro),)]
     for distro in ci_lib.DISTROS
 )
 
diff --git a/.ci/ci_lib.py b/.ci/ci_lib.py
index 77cc30a2..7126887b 100644
--- a/.ci/ci_lib.py
+++ b/.ci/ci_lib.py
@@ -142,6 +142,10 @@ def get_docker_hostname():
     return parsed.netloc.partition(':')[0]
 
 
+def image_for_distro(distro):
+    return 'mitogen/%s-test' % (distro.partition('-')[0],)
+
+
 def make_containers():
     docker_hostname = get_docker_hostname()
     return [
diff --git a/.ci/debops_common_install.py b/.ci/debops_common_install.py
index 8830eaf6..32241449 100755
--- a/.ci/debops_common_install.py
+++ b/.ci/debops_common_install.py
@@ -13,6 +13,6 @@ ci_lib.run_batches([
         'pip install -qqqU debops==0.7.2 ansible==%s' % ci_lib.ANSIBLE_VERSION,
     ],
     [
-        'docker pull mitogen/debian-test',
+        'docker pull %s' % (ci_lib.image_for_distro('debian'),),
     ],
 ])
diff --git a/.ci/mitogen_install.py b/.ci/mitogen_install.py
index 4cc06c04..9afbe67d 100755
--- a/.ci/mitogen_install.py
+++ b/.ci/mitogen_install.py
@@ -8,7 +8,7 @@ batches = [
         'pip install -r tests/requirements.txt',
     ],
     [
-        'docker pull mitogen/%s-test' % (ci_lib.DISTRO,),
+        'docker pull %s' % (ci_lib.image_for_distro(ci_lib.DISTRO),),
     ]
 ]
 
diff --git a/.ci/prep_azure.py b/.ci/prep_azure.py
index 85c19947..10126df2 100755
--- a/.ci/prep_azure.py
+++ b/.ci/prep_azure.py
@@ -15,7 +15,7 @@ batches.append([
 ])
 
 batches.extend(
-    ['docker pull mitogen/%s-test' % (distro,)]
+    ['docker pull %s' % (ci_lib.image_for_distro(distro),)]
     for distro in ci_lib.DISTROS
 )