diff --git a/cmssw-tool-conf.spec b/cmssw-tool-conf.spec
index 9bfe37ccaca..953b3e30349 100644
--- a/cmssw-tool-conf.spec
+++ b/cmssw-tool-conf.spec
@@ -37,6 +37,7 @@ Requires: gsl
 Requires: highfive
 Requires: hector
 Requires: hepmc
+Requires: hepmc3
 Requires: heppdt
 Requires: herwig
 Requires: herwig7
diff --git a/hepmc3.spec b/hepmc3.spec
new file mode 100644
index 00000000000..7128d1de094
--- /dev/null
+++ b/hepmc3.spec
@@ -0,0 +1,33 @@
+### RPM external hepmc3 3.2.5
+
+Source: https://gitlab.cern.ch/hepmc/HepMC3/-/archive/3.2.5/HepMC3-%{realversion}.tar.gz
+
+BuildRequires: cmake
+
+%define drop_files %i/share
+
+%prep
+%setup -q -n HepMC3-%{realversion}
+
+%build
+sed 's/SOVERSION 3//' < CMakeLists.txt > tmpsed.txt
+mv tmpsed.txt CMakeLists.txt
+cd search
+sed 's/SOVERSION 4//' < CMakeLists.txt > tmpsed.txt
+mv tmpsed.txt CMakeLists.txt
+cd ..
+rm -rf ../build
+mkdir ../build
+cd ../build
+
+cmake ../HepMC3-%{realversion} \
+  -DHEPMC3_ENABLE_ROOTIO:BOOL=OFF -DHEPMC3_ENABLE_TEST:BOOL=OFF \
+  -DHEPMC3_INSTALL_INTERFACES:BOOL=ON -DHEPMC3_ENABLE_PYTHON:BOOL=OFF \
+  -DHEPMC3_BUILD_STATIC_LIBS:BOOL=OFF -DHEPMC3_BUILD_DOCS:BOOL=OFF \
+  -DCMAKE_INSTALL_PREFIX:PATH="%i"
+
+make %{makeprocesses}
+
+%install
+cd ../build
+make install
diff --git a/scram-tools.file/tools/hepmc3/hepmc3.xml b/scram-tools.file/tools/hepmc3/hepmc3.xml
new file mode 100644
index 00000000000..1bec426f62c
--- /dev/null
+++ b/scram-tools.file/tools/hepmc3/hepmc3.xml
@@ -0,0 +1,10 @@
+<tool name="hepmc3" version="@TOOL_VERSION@">
+  <lib name="HepMC3"/>
+  <lib name="HepMC3search"/>
+  <client>
+    <environment name="HEPMC3_BASE" default="@TOOL_ROOT@"/>
+    <environment name="LIBDIR" default="$HEPMC3_BASE/lib64"/>
+    <environment name="INCLUDE" default="$HEPMC3_BASE/include"/>
+  </client>
+  <runtime name="CMSSW_FWLITE_INCLUDE_PATH" value="$HEPMC3_BASE/include" type="path"/>
+</tool>