diff --git a/easystacks/pilot.nessi.no/2023.06/eessi-2023.06-eb-4.9.0-2023a.yml b/easystacks/pilot.nessi.no/2023.06/eessi-2023.06-eb-4.9.0-2023a.yml
index b3afe2b368..251bf02beb 100644
--- a/easystacks/pilot.nessi.no/2023.06/eessi-2023.06-eb-4.9.0-2023a.yml
+++ b/easystacks/pilot.nessi.no/2023.06/eessi-2023.06-eb-4.9.0-2023a.yml
@@ -1,3 +1,4 @@
 easyconfigs:
   - foss-2023a.eb
   - SciPy-bundle-2023.07-gfbf-2023a.eb
+  - X11-20230603-GCCcore-12.3.0.eb