diff --git a/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.1.2-2024a.yml b/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.1.2-2024a.yml
index 8a3e4bafc6..76c3220894 100644
--- a/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.1.2-2024a.yml
+++ b/easystacks/software.eessi.io/2025.06/eessi-2025.06-eb-5.1.2-2024a.yml
@@ -98,4 +98,5 @@ easyconfigs:
   - sympy-1.13.3-gfbf-2024a.eb
   - PuLP-2.8.0-foss-2024a.eb
   - R-bundle-Bioconductor-3.20-foss-2024a-R-4.4.2.eb
+  - tmux-3.4-GCCcore-13.3.0.eb
   - JupyterLab-4.2.5-GCCcore-13.3.0.eb