diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 315b208..59125f8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,12 +7,12 @@ jobs:
       # The CKAN version tag of the Solr and Postgres containers should match
       # the one of the container the tests run on.
       # You can switch this base image with a custom image tailored to your project
-      image: ckan/ckan-dev:2.12
+      image: ckan/ckan-dev:2.11
     services:
       solr:
-        image: ckan/ckan-solr:2.12-solr9
+        image: ckan/ckan-solr:2.11-solr9
       postgres:
-        image: ckan/ckan-postgres-dev:2.12
+        image: ckan/ckan-postgres-dev:2.11
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres
@@ -45,4 +45,3 @@ jobs:
         ckan -c test.ini db init
     - name: Run tests
       run: pytest --ckan-ini=test.ini --cov=ckanext.event_audit --disable-warnings ckanext/event_audit
-