diff --git a/easystacks/software.eessi.io/2023.06/zen4/eessi-2023.06-eb-4.9.3-2023a.yml b/easystacks/software.eessi.io/2023.06/zen4/eessi-2023.06-eb-4.9.3-2023a.yml
index 1d1b2caa09..7ced0d9218 100644
--- a/easystacks/software.eessi.io/2023.06/zen4/eessi-2023.06-eb-4.9.3-2023a.yml
+++ b/easystacks/software.eessi.io/2023.06/zen4/eessi-2023.06-eb-4.9.3-2023a.yml
@@ -9,3 +9,4 @@ easyconfigs:
   - ipympl-0.9.3-gfbf-2023a.eb
   - LHAPDF-6.5.4-GCC-12.3.0.eb
   - LoopTools-2.15-GCC-12.3.0.eb
+  - ncdu-1.18-GCC-12.3.0.eb