diff --git a/spack-environment/dev/spack.yaml b/spack-environment/dev/spack.yaml
index 84257e49df1dee5dc26f50cdce7e8f87a996e446..4eccde66d3b230d02a1f499f8cac6b8623d3bdea 100644
--- a/spack-environment/dev/spack.yaml
+++ b/spack-environment/dev/spack.yaml
@@ -30,6 +30,7 @@ spack:
     - gaudi@36.10 +aida
     - gdb@12.1 -debuginfod
     - geant4@11.1.1 cxxstd=17 +opengl -vecgeom +x11 +qt +threads
+    - graphviz@8.0.1
     - hepmc3@3.2.6 +python +rootio
     - heppdt@2.06.01
     - imagemagick@7.0.8-7