diff --git a/pkgs/development/python-modules/pytest-randomly/default.nix b/pkgs/development/python-modules/pytest-randomly/default.nix
new file mode 100644
index 000000000000..c4523ac728c6
--- /dev/null
+++ b/pkgs/development/python-modules/pytest-randomly/default.nix
@@ -0,0 +1,31 @@
+{ lib, buildPythonPackage, fetchPypi, isPy27
+, factory_boy, faker, numpy
+, pytest, pytest_xdist
+}:
+
+buildPythonPackage rec {
+  pname = "pytest-randomly";
+  version = "3.4.1";
+
+  disabled = isPy27;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0s9cx692cdchfrjqx7fgf9wnm3fdac211a4hjq1cx9qqnbpdpl2z";
+  };
+
+  propagatedBuildInputs = [ numpy factory_boy faker ];
+
+  checkInputs = [ pytest pytest_xdist ];
+
+  # test warnings are fixed on an unreleased version:
+  # https://github.com/pytest-dev/pytest-randomly/pull/281
+  checkPhase = "pytest -p no:randomly";
+
+  meta = with lib; {
+    description = "Pytest plugin to randomly order tests and control random.seed";
+    homepage = "https://github.com/pytest-dev/pytest-randomly";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.sternenseemann ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index b23bdd75db15..2ac4f92122a9 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2750,6 +2750,8 @@ in {
 
   pytest-raisesregexp = callPackage ../development/python-modules/pytest-raisesregexp { };
 
+  pytest-randomly = callPackage ../development/python-modules/pytest-randomly { };
+
   pytest-random-order = callPackage ../development/python-modules/pytest-random-order { };
 
   pytest-repeat = callPackage ../development/python-modules/pytest-repeat { };