diff --git a/eessi-2023.06-eb-4.8.0-2021a.yml b/eessi-2023.06-eb-4.8.0-2021a.yml
index 1adf0572d3..3ba579cc57 100644
--- a/eessi-2023.06-eb-4.8.0-2021a.yml
+++ b/eessi-2023.06-eb-4.8.0-2021a.yml
@@ -1,2 +1,5 @@
 easyconfigs:
   - GDAL-3.3.0-foss-2021a.eb
+  - ESPResSo-4.2.1-foss-2021a.eb:
+       options:                                  
+         from-pr: 18963