diff --git a/pkgs/development/python-modules/leb128/default.nix b/pkgs/development/python-modules/leb128/default.nix
new file mode 100644
index 000000000000..fa71abd735e7
--- /dev/null
+++ b/pkgs/development/python-modules/leb128/default.nix
@@ -0,0 +1,24 @@
+{ buildPythonPackage, fetchFromGitHub, pytestCheckHook, lib }:
+
+buildPythonPackage rec {
+  pname = "leb128";
+  version = "1.0.4";
+
+  # fetchPypi doesn't include files required for tests
+  src = fetchFromGitHub {
+    owner = "mohanson";
+    repo = "leb128";
+    rev = "v${version}";
+    sha256 = "040l6fxyzqal841kirf783kk1840gcy1gjd374jfr46v96qc8scm";
+  };
+
+  checkInputs = [ pytestCheckHook ];
+  pythonImportsCheck = [ "leb128" ];
+
+  meta = with lib; {
+    description = "A utility to encode and decode Little Endian Base 128";
+    homepage = "https://github.com/mohanson/leb128";
+    license = licenses.mit;
+    maintainers = with maintainers; [ urlordjames ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 172fdc4b6681..8365c34992e5 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3973,6 +3973,8 @@ in {
 
   leather = callPackage ../development/python-modules/leather { };
 
+  leb128 = callPackage ../development/python-modules/leb128 { };
+
   ledger_agent = callPackage ../development/python-modules/ledger_agent { };
 
   ledgerblue = callPackage ../development/python-modules/ledgerblue { };