diff --git a/environment/openshift/base.regular.ubuntu.dockerfile b/environment/openshift/base.regular.ubuntu.dockerfile
index 53433af3b..1d1feba60 100644
--- a/environment/openshift/base.regular.ubuntu.dockerfile
+++ b/environment/openshift/base.regular.ubuntu.dockerfile
@@ -1 +1 @@
-FROM ubuntu:16.04
+FROM ubuntu:26.04