diff --git a/pkgs/development/python-modules/hepunits/default.nix b/pkgs/development/python-modules/hepunits/default.nix
new file mode 100644
index 000000000000..9bfd4de36f78
--- /dev/null
+++ b/pkgs/development/python-modules/hepunits/default.nix
@@ -0,0 +1,31 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, setuptools-scm
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "hepunits";
+  version = "2.2.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-6A5hb+8oF/PGbHXcDkHtJjYkiMzgX5Stz977jgXry1g=";
+  };
+  nativeBuildInputs = [
+    setuptools-scm
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  meta = {
+    description = "Units and constants in the HEP system of units";
+    homepage = "https://github.com/scikit-hep/hepunits";
+    license = lib.licenses.bsd3;
+    maintainers = with lib.maintainers; [ doronbehar ];
+  };
+}
+
diff --git a/pkgs/development/python-modules/particle/default.nix b/pkgs/development/python-modules/particle/default.nix
new file mode 100644
index 000000000000..d1207fe84983
--- /dev/null
+++ b/pkgs/development/python-modules/particle/default.nix
@@ -0,0 +1,56 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, fetchPypi
+, setuptools-scm
+, attrs
+, deprecated
+, hepunits
+, pytestCheckHook
+, tabulate
+, pandas
+}:
+
+buildPythonPackage rec {
+  pname = "particle";
+  version = "0.20.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-HoWWwoGMrkRqlYzrF2apGsxsZAHwHbHSO5TCSCelxUc=";
+  };
+  nativeBuildInputs = [
+    setuptools-scm
+  ];
+
+  propagatedBuildInputs = [
+    attrs
+    deprecated
+    hepunits
+  ];
+
+  pythonImportsCheck = [
+    "particle"
+  ];
+
+  preCheck = ''
+    # Disable benchmark tests, so we won't need pytest-benchmark and pytest-cov
+    # as dependencies
+    substituteInPlace pyproject.toml \
+      --replace '"--benchmark-disable", ' ""
+    rm tests/particle/test_performance.py
+  '';
+
+  checkInputs = [
+    pytestCheckHook
+    tabulate
+    pandas
+  ];
+
+  meta = {
+    description = "Package to deal with particles, the PDG particle data table, PDGIDs, etc.";
+    homepage = "https://github.com/scikit-hep/particle";
+    license = lib.licenses.bsd3;
+    maintainers = with lib.maintainers; [ doronbehar ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index a8fa9c95307c..e583f3293f68 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3750,6 +3750,8 @@ in {
     inherit python;
   });
 
+  hepunits = callPackage ../development/python-modules/hepunits { };
+
   herepy = callPackage ../development/python-modules/herepy { };
 
   hetzner = callPackage ../development/python-modules/hetzner { };
@@ -5990,6 +5992,8 @@ in {
 
   parts = callPackage ../development/python-modules/parts { };
 
+  particle = callPackage ../development/python-modules/particle { };
+
   parver = callPackage ../development/python-modules/parver { };
   arpeggio = callPackage ../development/python-modules/arpeggio { };