diff --git a/pkgs/development/python-modules/tox/default.nix b/pkgs/development/python-modules/tox/default.nix
new file mode 100644
index 000000000000..bc70d65cc1f8
--- /dev/null
+++ b/pkgs/development/python-modules/tox/default.nix
@@ -0,0 +1,24 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, py
+, virtualenv
+, pluggy
+, setuptools_scm
+, six
+}:
+
+buildPythonPackage rec {
+  pname = "tox";
+  version = "2.9.1";
+
+  buildInputs = [ setuptools_scm ];
+  propagatedBuildInputs = [ py virtualenv pluggy six ];
+
+  doCheck = false;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "752f5ec561c6c08c5ecb167d3b20f4f4ffc158c0ab78855701a75f5cef05f4b8";
+  };
+}
\ No newline at end of file
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 72c908b9353d..1e8fd8dcc911 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -18435,19 +18435,7 @@ in {
 
   toolz = callPackage ../development/python-modules/toolz { };
 
-  tox = buildPythonPackage rec {
-    name = "tox-${version}";
-    version = "2.4.1";
-
-    propagatedBuildInputs = with self; [ py virtualenv pluggy ];
-
-    doCheck = false;
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/t/tox/${name}.tar.gz";
-      sha256 = "1nwn4jz8ns53n17bm1xkzlz4zyyxbgjwrcg2cjsn25ab7hd5fwv6";
-    };
-  };
+  tox = callPackage ../development/python-modules/tox { };
 
   tqdm = callPackage ../development/python-modules/tqdm { };