diff --git a/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.4.0-2025b.yml b/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.4.0-2025b.yml
index eae0c73f28..a67e9eb33f 100644
--- a/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.4.0-2025b.yml
+++ b/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.4.0-2025b.yml
@@ -1,2 +1,3 @@
 easyconfigs:
+  - buildenv-default-lfoss-2025b.eb
   - IRkernel-1.3.2-gfbf-2025b-R-4.5.2.eb: