diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index acbe6b68214dab2571045f0529d92aff6403c564..a4bd6857a1b115efea8aa428f055bbdbbaab3d09 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,7 +19,7 @@ variables:
   ## 8bdc5065792c185be9934ab0c2a5b087b8845bd1: emacs: Add option to install version 28.1
 
   ## Spack github version, e.g. v0.18 branch, v0.18.1 tag, or commit hash
-  EICSPACK_VERSION: "v0.18.11"
+  EICSPACK_VERSION: "v0.18.12"
   ## Space-separated list of eic-spack cherry-picks
   EICSPACK_CHERRYPICKS: "" 
 
diff --git a/spack.yaml b/spack.yaml
index 84988ae0492c61b8334b2e035cbe4327f9fb29c5..b60165d76d53e9dd4d7cb1908c1fa45ec7d2afa0 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -17,7 +17,7 @@ spack:
     - fastjet@3.3.4
     - fmt@8.1.1 +shared cxxstd=17
     - gaudi@36.7 +optional
-    - geant4@11.0.2 cxxstd=17 +opengl +vecgeom +x11 +qt +threads
+    - geant4@11.0.3 cxxstd=17 +opengl +vecgeom +x11 +qt +threads
     - genfit@2.00.00
     - hepmc3@3.2.4 +python +rootio 
     - heppdt@2.06.01