diff --git a/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-4.9.0-2023a.yml b/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-4.9.0-2023a.yml
index 1586c16827..eba776ab1f 100644
--- a/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-4.9.0-2023a.yml
+++ b/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-4.9.0-2023a.yml
@@ -1,5 +1,10 @@
 easyconfigs:
   - OpenFOAM-11-foss-2023a.eb:
+      # see https://github.com/easybuilders/easybuild-easyconfigs/pull/19545
       options:
         from-pr: 19545
   - at-spi2-core-2.49.91-GCCcore-12.3.0.eb
+  - ESPResSo-4.2.1-foss-2023a.eb:
+      # see https://github.com/easybuilders/easybuild-easyconfigs/pull/19592    
+      options:
+        from-pr: 19592