diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index a949bffd315c..0e56f6d3b2ab 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9689,6 +9689,23 @@ in {
     };
   };
 
+  safe = buildPythonPackage rec {
+    version = "0.4";
+    name = "Safe-${version}";
+
+    src = pkgs.fetchurl {
+      url = "mirror://pypi/S/Safe/${name}.tar.gz";
+      sha256 = "a2fdac9fe8a9dcf02b438201d6ce0b7be78f85dc6492d03edfb89be2adf489de";
+    };
+
+    buildInputs = with self; [ nose ];
+    meta = {
+      homepage = "https://github.com/lepture/safe";
+      license = licenses.bsd3;
+      description = "Check password strength";
+    };
+  };
+
   samplerate = buildPythonPackage rec {
     name = "scikits.samplerate-${version}";
     version = "0.3.3";