diff --git a/pkgs/development/python-modules/doubleratchet/default.nix b/pkgs/development/python-modules/doubleratchet/default.nix
new file mode 100644
index 000000000000..8b4340fb7557
--- /dev/null
+++ b/pkgs/development/python-modules/doubleratchet/default.nix
@@ -0,0 +1,52 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  setuptools,
+  cryptography,
+  pydantic,
+  typing-extensions,
+  pytestCheckHook,
+  pytest-asyncio,
+}:
+
+buildPythonPackage rec {
+  pname = "doubleratchet";
+  version = "1.1.0";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "Syndace";
+    repo = "python-doubleratchet";
+    tag = "v${version}";
+    hash = "sha256-yoph3u7LjGjSPi1hFlXzWmSNkCXvY/ocTt2MKa+F1fs=";
+  };
+
+  strictDeps = true;
+
+  build-system = [
+    setuptools
+  ];
+
+  dependencies = [
+    cryptography
+    pydantic
+    typing-extensions
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+    pytest-asyncio
+  ];
+
+  pythonImportsCheck = [ "doubleratchet" ];
+
+  meta = {
+    description = "Python implementation of the Double Ratchet algorithm";
+    homepage = "https://github.com/Syndace/python-doubleratchet";
+    changelog = "https://github.com/Syndace/python-doubleratchet/blob/v${version}/CHANGELOG.md";
+    license = lib.licenses.mit;
+    teams = with lib.teams; [ ngi ];
+    maintainers = with lib.maintainers; [ axler1 ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index be009ea09c82..6d06ec96f325 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4129,6 +4129,8 @@ self: super: with self; {
 
   dotwiz = callPackage ../development/python-modules/dotwiz { };
 
+  doubleratchet = callPackage ../development/python-modules/doubleratchet { };
+
   downloader-cli = callPackage ../development/python-modules/downloader-cli { };
 
   dparse = callPackage ../development/python-modules/dparse { };