diff --git a/docker/ckan/2.10.4-base.Dockerfile b/docker/ckan/2.10.4-base.Dockerfile
index 93ccc0b9..3d870bef 100644
--- a/docker/ckan/2.10.4-base.Dockerfile
+++ b/docker/ckan/2.10.4-base.Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/alphagov/ckan:2.10.4-j-core
+FROM ghcr.io/alphagov/ckan:2.10.4-i-core
 
 COPY production.ini $CKAN_CONFIG/production.ini
 # Set CKAN_INI