diff --git a/pkgs/development/python-modules/demjson/default.nix b/pkgs/development/python-modules/demjson/default.nix
new file mode 100644
index 000000000000..4f5d7a11bd8f
--- /dev/null
+++ b/pkgs/development/python-modules/demjson/default.nix
@@ -0,0 +1,21 @@
+{ stdenv, buildPythonPackage, fetchPypi, isPy36 }:
+
+buildPythonPackage rec {
+  pname = "demjson";
+  version = "2.2.4";
+  name = "${pname}-${version}";
+  disabled = isPy36;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0ygbddpnvp5lby6mr5kz60la3hkvwwzv3wwb3z0w9ngxl0w21pii";
+  };
+
+  meta = with stdenv.lib; {
+    description = "Encoder/decoder and lint/validator for JSON (JavaScript Object Notation)";
+    homepage = http://deron.meranda.us/python/demjson/;
+    license = licenses.lgpl3Plus;
+    maintainers = with maintainers; [ bjornfor ];
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 2759ec201212..b7624cef55eb 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4832,26 +4832,7 @@ in {
     };
   };
 
-
-  demjson = buildPythonPackage rec {
-    pname = "demjson";
-    version = "2.2.4";
-    name = "${pname}-${version}";
-    disabled = isPy36;
-
-    src = fetchPypi {
-      inherit pname version;
-      sha256 = "0ygbddpnvp5lby6mr5kz60la3hkvwwzv3wwb3z0w9ngxl0w21pii";
-    };
-
-    meta = {
-      description = "Encoder/decoder and lint/validator for JSON (JavaScript Object Notation)";
-      homepage = http://deron.meranda.us/python/demjson/;
-      license = licenses.lgpl3Plus;
-      maintainers = with maintainers; [ bjornfor ];
-      platforms = platforms.all;
-    };
-  };
+  demjson = callPackage ../development/python-modules/demjson { };
 
   derpconf = self.buildPythonPackage rec {
     name = "derpconf-0.4.9";