diff --git a/eessi-2023.06-eb-4.7.2-2021a.yml b/eessi-2023.06-eb-4.7.2-2021a.yml
index 42a42f2236..478d0eaa46 100644
--- a/eessi-2023.06-eb-4.7.2-2021a.yml
+++ b/eessi-2023.06-eb-4.7.2-2021a.yml
@@ -24,3 +24,4 @@ easyconfigs:
        # see https://github.com/easybuilders/easybuild-easyconfigs/pull/18348
        options:
          from-pr: 18348
+  - waLBerla-6.1-foss-2021a.eb