diff --git a/easystacks/software.eessi.io/2026.06/eessi-2026.06-eb-5.4.0-2026.1.yml b/easystacks/software.eessi.io/2026.06/eessi-2026.06-eb-5.4.0-2026.1.yml
index a67dd2eb70..8878f16101 100644
--- a/easystacks/software.eessi.io/2026.06/eessi-2026.06-eb-5.4.0-2026.1.yml
+++ b/easystacks/software.eessi.io/2026.06/eessi-2026.06-eb-5.4.0-2026.1.yml
@@ -151,3 +151,14 @@ easyconfigs:
   - PnetCDF-1.14.1-gompi-2026.1.eb
   - h5py-3.16.0-foss-2026.1.eb
   - netcdf4-python-1.7.4-foss-2026.1.eb
+  - MPICH-5.0.1-GCC-15.2.0.eb
+  - PLUMED-2.10.0-foss-2026.1.eb
+  - tbb-2022.3.0-GCCcore-15.2.0.eb
+  - ttyd-1.7.7-GCCcore-15.2.0.eb:
+      options:
+        # see https://github.com/easybuilders/easybuild-easyconfigs/pull/26807
+        from-commit: 4322be61bfc22c804858ab15712f9babf4f5316a
+  - RStudio-Server-2026.06.0+242-foss-2026.1-R-4.6.1.eb:
+      options:
+        # see https://github.com/easybuilders/easybuild-easyconfigs/pull/26601
+        from-commit: c7a318301b58298f7bd7b95593b1b09a5d061f8d