diff --git a/pkgs/development/python-modules/certifi/default.nix b/pkgs/development/python-modules/certifi/default.nix
new file mode 100644
index 00000000000..8658c76df79
--- /dev/null
+++ b/pkgs/development/python-modules/certifi/default.nix
@@ -0,0 +1,22 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+}:
+
+buildPythonPackage rec {
+  pname = "certifi";
+  version = "2017.1.23";
+  name = "${pname}-${version}";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1klrzl3hgvcf2mjk00g0k3kk1p2z27vzwnxivwar4vhjmjvpz1w1";
+  };
+
+  meta = {
+    homepage = http://certifi.io/;
+    description = "Python package for providing Mozilla's CA Bundle";
+    license = lib.licenses.isc;
+    maintainers = with lib.maintainers; [ koral ];
+  };
+}
\ No newline at end of file
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 54f1fd46047..f40df8ca96d 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3695,22 +3695,7 @@ in {
     };
   };
 
-  certifi = buildPythonPackage rec {
-    name = "certifi-${version}";
-    version = "2017.1.23";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/c/certifi/${name}.tar.gz";
-      sha256 = "1klrzl3hgvcf2mjk00g0k3kk1p2z27vzwnxivwar4vhjmjvpz1w1";
-    };
-
-    meta = {
-      homepage = http://certifi.io/;
-      description = "Python package for providing Mozilla's CA Bundle";
-      license = licenses.isc;
-      maintainers = with maintainers; [ koral ];
-    };
-  };
+  certifi = callPackage ../development/python-modules/certifi { };
 
   characteristic = buildPythonPackage rec {
     name = "characteristic-14.1.0";