diff --git a/spack.yaml b/spack.yaml
index 125b31ae28affa9b59830da091bac84c4dc09451..b48acee9fcade9487050e173120af70b8454e091 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -12,7 +12,7 @@ spack:
     - fastjet@3.3.3
     - fmt@7.1.2 +shared cxxstd=17
     - gaudi@36.0
-    - geant4@10.7.1 cxxstd=17 +opengl +vecgeom +x11 +qt +threads
+    - geant4@10.7.3 cxxstd=17 +opengl +vecgeom +x11 +qt +threads
     - genfit@2.00.00
     - hepmc3@3.2.4 +python +rootio 
     - heppdt@3.04.01