diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c31f34ffae3..850bcaae6b2 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8765,6 +8765,23 @@ let
     };
   };
 
+  pep257 = buildPythonPackage rec {
+    name = "pep257-${version}";
+    version = "0.3.2";
+
+    src = pkgs.fetchurl {
+      url = "https://github.com/GreenSteam/pep257/archive/${version}.tar.gz";
+      sha256 = "0v8aq0xzsa7clazszxl42904c3jpq69lg8a5hg754bqcqf72hfrn";
+    };
+
+    meta = {
+      homepage = https://github.com/GreenSteam/pep257/;
+      description = "Python docstring style checker";
+      longDescription = "Static analysis tool for checking compliance with Python PEP 257.";
+      lecense = licenses.mit;
+    };
+  };
+
   percol = buildPythonPackage rec {
     name = "percol-${version}";
     version = "0.0.8";