diff --git a/pkgs/development/python-modules/tinycss/default.nix b/pkgs/development/python-modules/tinycss/default.nix
new file mode 100644
index 000000000000..ab6a4183df50
--- /dev/null
+++ b/pkgs/development/python-modules/tinycss/default.nix
@@ -0,0 +1,35 @@
+{ pkgs
+, buildPythonPackage
+, fetchPypi
+, pytest
+, python
+, cssutils
+, isPyPy
+}:
+
+buildPythonPackage rec {
+  pname = "tinycss";
+  version = "0.4";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "12306fb50e5e9e7eaeef84b802ed877488ba80e35c672867f548c0924a76716e";
+  };
+
+  checkInputs = [ pytest ];
+  propagatedBuildInputs = [ cssutils ];
+
+  checkPhase = ''
+    py.test $out/${python.sitePackages}
+  '';
+
+  # Disable Cython tests for PyPy
+  TINYCSS_SKIP_SPEEDUPS_TESTS = pkgs.lib.optional isPyPy true;
+
+  meta = with pkgs.lib; {
+    description = "Complete yet simple CSS parser for Python";
+    license = licenses.bsd3;
+    homepage = https://pythonhosted.org/tinycss/;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 57f8c947fcc5..62b77b187bc7 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1979,32 +1979,7 @@ in {
 
   pytest-sugar = callPackage ../development/python-modules/pytest-sugar { };
 
-  tinycss = buildPythonPackage rec {
-    name = "tinycss-${version}";
-    version = "0.3";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/t/tinycss/${name}.tar.gz";
-      sha256 = "1pichqra4wk86142hqgvy9s5x6c5k5zhy8l9qxr0620pqk8spbd4";
-    };
-
-    buildInputs = with self; [ pytest ];
-
-    propagatedBuildInputs = with self; [ cssutils ];
-
-    checkPhase = ''
-      py.test $out/${python.sitePackages}
-    '';
-
-    # Disable Cython tests for PyPy
-    TINYCSS_SKIP_SPEEDUPS_TESTS = optional isPyPy true;
-
-    meta = {
-      description = "Complete yet simple CSS parser for Python";
-      license = licenses.bsd3;
-      homepage = https://pythonhosted.org/tinycss/;
-    };
-  };
+  tinycss = callPackage ../development/python-modules/tinycss { };
 
   tinycss2 = callPackage ../development/python-modules/tinycss2 { };