diff --git a/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.3.0-2025a.yml b/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.3.0-2025a.yml
index ca45d59ab3..0234be3ba5 100644
--- a/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.3.0-2025a.yml
+++ b/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.3.0-2025a.yml
@@ -8,3 +8,4 @@ easyconfigs:
       options:
         # see https://github.com/easybuilders/easybuild-easyconfigs/pull/25981
         from-commit: df78eb85f1e5f2b42c1feba2e93f4dc822a02474
+  - ESPResSo-4.2.2-foss-2025a.eb