diff --git a/zuul.d/ironic-python-agent-builder-jobs.yaml b/zuul.d/ironic-python-agent-builder-jobs.yaml
index 6484b23..9966630 100644
--- a/zuul.d/ironic-python-agent-builder-jobs.yaml
+++ b/zuul.d/ironic-python-agent-builder-jobs.yaml
@@ -47,6 +47,7 @@
     vars:
       image_type: 'dib'
       image_distro: 'debian-minimal'
+      image_release: 'buster'
 
 - job:
     name: ironic-python-agent-check-image-base
@@ -137,6 +138,7 @@
     vars:
       image_type: 'dib'
       image_distro: 'debian-minimal'
+      image_release: 'buster'
 
 - job:
     name: ironic-python-agent-check-image-dib-debian-extra