diff --git a/spack.sh b/spack.sh
index 80d420dd5cff2ac4443cbfd7a5364fc713e175a4..b6d58c42c3378c18d5472593e6cdff31c0231478 100644
--- a/spack.sh
+++ b/spack.sh
@@ -14,6 +14,7 @@ ed8ecc469e7b87842a876323878831e301f136a2
 81e73b4dd4ea0bf6c6947359d3cee9d4270df13d
 c485709f625429a88a184a099373d76c9438f8e3
 6f08daf67020289e6a5ed1df9783ac5b2919e477
+50051b56199992eb4395b8ff22913c1995311a8c
 60dbce90a62a87f3491078028b239575053dc8df
 5759d3e5f857983f4f9a24c85daf715f5c525a00
 ---
@@ -25,5 +26,6 @@ c485709f625429a88a184a099373d76c9438f8e3
 ## 81e73b4dd4ea0bf6c6947359d3cee9d4270df13d: root: new version 6.30.00
 ## c485709f625429a88a184a099373d76c9438f8e3: iwyu: new versions up 0.21 (depends_on llvm-17)
 ## 6f08daf67020289e6a5ed1df9783ac5b2919e477: root: add a webgui patch
+## 50051b56199992eb4395b8ff22913c1995311a8c: geant4: new version 11.1.3
 ## 60dbce90a62a87f3491078028b239575053dc8df: hepmc3: fix from_variant -> self.define
 ## 5759d3e5f857983f4f9a24c85daf715f5c525a00: hepmc3: str on versions