diff --git a/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-4.9.1-2023a.yml b/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-4.9.1-2023a.yml
index 32b388854d..8238b379f9 100644
--- a/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-4.9.1-2023a.yml
+++ b/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-4.9.1-2023a.yml
@@ -12,3 +12,6 @@ easyconfigs:
   - ipympl-0.9.3-gfbf-2023a.eb:
      options:
        from-pr: 18852
+  - ESPResSo-4.2.2-foss-2023a.eb:
+      options:
+        from-pr: 20595