diff --git a/eic-spack.sh b/eic-spack.sh
index cbe1ee907723f7b897e88e6c25d9c48133dad7ee..dca1aaff2ffa167885c0b0bc9d0eeacf6b8d7f82 100644
--- a/eic-spack.sh
+++ b/eic-spack.sh
@@ -3,7 +3,7 @@ EICSPACK_ORGREPO="eic/eic-spack"
 
 ## EIC spack commit hash or github version, e.g. v0.19.7
 ## note: nightly builds could use a branch e.g. releases/v0.19
-EICSPACK_VERSION="1ef77b3b596e5b335366a90a16156c43a85f65c7"
+EICSPACK_VERSION="9c2664d5f61b7bbc08cfeb5cfc0028a63425d89d"
 
 ## Space-separated list of eic-spack cherry-picks
 read -r -d '' EICSPACK_CHERRYPICKS <<- \
diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 1a874a22e9ade13319b196775a10f7dbbbaf8007..6c65cb0716ccf64877a6f4e60b0c17f32c77ea79 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -119,7 +119,7 @@ packages:
       prefix: /opt/software/externals/g4ndl
   geant4:
     require:
-    - '@11.1.2.east'
+    - '@11.1.3.east'
     - cxxstd=17 -vecgeom +threads -vtk
     - any_of: [+opengl +qt +x11, -opengl -qt -x11]
   graphviz: