diff --git a/containers/debian/base.Dockerfile b/containers/debian/base.Dockerfile
index 30e0c69fff0a141599a27a136ca675ff8599eca8..8418665b45efb1df92f4f13bcffda9314a2ec12c 100644
--- a/containers/debian/base.Dockerfile
+++ b/containers/debian/base.Dockerfile
@@ -46,6 +46,7 @@ RUN --mount=type=cache,target=/var/cache/apt                            \
         nano                                                            \
         openssh-client                                                  \
         parallel                                                        \
+        patch                                                           \
         poppler-utils                                                   \
         time                                                            \
         unzip                                                           \
diff --git a/spack.yaml b/spack.yaml
index 3fd5b906626cde524de676b9491956cf88da01f7..1a4292440cbfe623938a7dbd74bfff9896536083 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -32,6 +32,7 @@ spack:
     - opencascade@7.6.3
     - pkg-config@0.29.2
     - podio@0.15
+    - prmon@3.0.2 +plot
     - pythia8@8.306 +fastjet
     - python@3.10.8
     - py-numpy@1.23.4