diff --git a/fedora-common-ostree.yaml b/fedora-common-ostree.yaml
index d5d7392..3895bf4 100644
--- a/fedora-common-ostree.yaml
+++ b/fedora-common-ostree.yaml
@@ -128,6 +128,6 @@ postprocess:
 
     # Fix triggerin for samba-client in cups package (not supported by rpm-ostree yet)
     # https://github.com/fedora-silverblue/issue-tracker/issues/532
-    ln -snf /usr/libexec/samba/cups_backend_smb /usr/lib/cups/backend/smb
+    # ln -snf /usr/libexec/samba/cups_backend_smb /usr/lib/cups/backend/smb
 
 postprocess-script: "postprocess.sh"
diff --git a/pythia6.repo b/pythia6.repo
new file mode 100644
index 0000000..dc440f2
--- /dev/null
+++ b/pythia6.repo
@@ -0,0 +1,10 @@
+[pythia6]
+name=Pythia6 packages
+baseurl=https://download.copr.fedorainfracloud.org/results/yanqiyu/pythia6/fedora-40-$basearch/
+type=rpm-md
+skip_if_unavailable=True
+gpgcheck=1
+gpgkey=https://download.copr.fedorainfracloud.org/results/yanqiyu/pythia6/pubkey.gpg
+repo_gpgcheck=0
+enabled=1
+enabled_metadata=1
diff --git a/root-pythia6.yaml b/root-pythia6.yaml
new file mode 100644
index 0000000..0b68461
--- /dev/null
+++ b/root-pythia6.yaml
@@ -0,0 +1,40 @@
+packages:
+  - root-fonts
+  - root-icons
+  - root-io
+  - root-mathmore
+  - root-graf-postscript
+  - root-graf-x11
+  - root-graf
+  - root-graf-gpad
+  - root-graf3d
+  - root-hist
+  - root-hist-painter
+  - root-matrix
+  - root-mathcore
+  - root-minuit
+  - root-multiproc
+  - root-net
+  - root-physics
+  - root-tree
+  - root-tree-ntuple
+  - root-graf-asimage
+  - root-gui
+  - root-gui-ged
+  - root-tree-player
+  - root-tree-dataframe
+  - root-vecops
+  - root-core
+  - root-cling
+  - root-montecarlo-eg
+  - root-montecarlo-pythia6
+  - root
+  - root-genvector
+  - root-geom
+  - root-netx
+  - root-smatrix
+  - pythia6
+  - pythia6-devel
+
+repos:
+  - pythia6
diff --git a/server.yaml b/server.yaml
index 0eec535..7ee6dd6 100644
--- a/server.yaml
+++ b/server.yaml
@@ -1,5 +1,6 @@
 include:
   - fedora-common-ostree.yaml
+  - root-pythia6.yaml
 ref: fedora/40/${basearch}/karuboniru-server
 
 repos:
@@ -208,23 +209,6 @@ packages:
   - glibc-all-langpacks
   - plymouth-system-theme
 
-  # HEP
-  - python3-root
-  - root-genvector
-  - root-geom
-  - root-gui-webgui6
-  - root-hist-factory
-  - root-minuit2
-  - root-montecarlo-pythia8
-  - root-netx
-  - root-roofit-more
-  - root-smatrix
-  - root-spectrum
-  - root-tutorial
-  - root-unfold
-  - xrootd-client
-  - xrootd-voms
-
   # identity file
   - fedora-release-identity-server