diff --git a/eic-spack.sh b/eic-spack.sh
index eac402dc..f0f94be1 100644
--- a/eic-spack.sh
+++ b/eic-spack.sh
@@ -5,4 +5,4 @@ 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="ce2dc68e4f75299f7a684708788870282ecde53a"
+EICSPACK_VERSION="12e820017e29b7192b551ca1050cf9d3062e50e1"
diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 6d896181..f546b448 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -570,7 +570,7 @@ packages:
     - hepmc=3 plugin-match=HERA,LEP,MC
   root:
     require:
-    - '@6.38.00'
+    - '@6.38.04'
     - cxxstd=20 +fftw +fortran +gdml +http -ipo +mlp +python +root7 +tmva +tmva-sofie +x +xrootd +ssl
     - any_of: [+opengl +webgui, -opengl -webgui]
   sherpa: