diff --git a/eessi-2023.06-eb-4.8.0-2021a.yml b/eessi-2023.06-eb-4.8.0-2021a.yml
index 1adf0572d3..f4c5b3e3c7 100644
--- a/eessi-2023.06-eb-4.8.0-2021a.yml
+++ b/eessi-2023.06-eb-4.8.0-2021a.yml
@@ -1,2 +1,3 @@
 easyconfigs:
   - GDAL-3.3.0-foss-2021a.eb
+  - ESPResSo-4.2.1-foss-2021a.eb