diff --git a/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-5.1.2-2023a.yml b/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-5.1.2-2023a.yml
index a0635f3602..cc1624b7aa 100644
--- a/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-5.1.2-2023a.yml
+++ b/easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-5.1.2-2023a.yml
@@ -5,3 +5,4 @@ easyconfigs:
       options:
         # see https://github.com/easybuilders/easybuild-easyconfigs/pull/24259
         from-commit: 3f59104cfd0aeedc261e2bf7ca18b8ae5efdca0a 
+  - ESMF-8.6.0-foss-2023a.eb