diff --git a/pkgs/development/python-modules/unidiff/default.nix b/pkgs/development/python-modules/unidiff/default.nix
new file mode 100644
index 000000000000..81e9019f489c
--- /dev/null
+++ b/pkgs/development/python-modules/unidiff/default.nix
@@ -0,0 +1,21 @@
+{ lib, buildPythonPackage, fetchFromGitHub }:
+
+buildPythonPackage rec {
+  pname = "unidiff";
+  version = "0.5.5";
+
+  # PyPI tarball doesn't ship tests
+  src = fetchFromGitHub {
+    owner = "matiasb";
+    repo = "python-unidiff";
+    rev = "v${version}";
+    sha256 = "1nvi7s1nn5p7j6aql1nkn2kiadnfby98yla5m3jq8xwsx0aplwdm";
+  };
+
+  meta = with lib; {
+    description = "Unified diff python parsing/metadata extraction library";
+    homepage = https://github.com/matiasb/python-unidiff;
+    license = licenses.mit;
+    maintainers = [ maintainers.marsam ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index d7a22f94b53a..0fa51214e439 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4382,6 +4382,8 @@ in {
 
   unicodecsv = callPackage ../development/python-modules/unicodecsv { };
 
+  unidiff = callPackage ../development/python-modules/unidiff { };
+
   unittest2 = callPackage ../development/python-modules/unittest2 { };
 
   unittest-xml-reporting = callPackage ../development/python-modules/unittest-xml-reporting { };