diff --git a/pkgs/development/python-modules/regenmaschine/default.nix b/pkgs/development/python-modules/regenmaschine/default.nix
new file mode 100644
index 00000000000..3380ef99f18
--- /dev/null
+++ b/pkgs/development/python-modules/regenmaschine/default.nix
@@ -0,0 +1,51 @@
+{ lib
+, aiohttp
+, aresponses
+, asynctest
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, pytest-aiohttp
+, pytest-asyncio
+, pytest-cov
+, pytest-mock
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "regenmaschine";
+  version = "3.1.1";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "bachya";
+    repo = pname;
+    rev = version;
+    sha256 = "0m6i7vspp8ssdk2k32kznql1j8gkp300kzb7pk67hzvpijdy3mca";
+  };
+
+  nativeBuildInputs = [ poetry-core ];
+
+  propagatedBuildInputs = [ aiohttp ];
+
+  checkInputs = [
+    aresponses
+    asynctest
+    pytest-aiohttp
+    pytest-asyncio
+    pytest-cov
+    pytest-mock
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "regenmaschine" ];
+
+  __darwinAllowLocalNetworking = true;
+
+  meta = with lib; {
+    description = "Python library for interacting with RainMachine smart sprinkler controllers";
+    homepage = "https://github.com/bachya/regenmaschine";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/servers/home-assistant/component-packages.nix b/pkgs/servers/home-assistant/component-packages.nix
index 051f7032bd5..68249bddbbd 100644
--- a/pkgs/servers/home-assistant/component-packages.nix
+++ b/pkgs/servers/home-assistant/component-packages.nix
@@ -659,7 +659,7 @@
     "rainbird" = ps: with ps; [ ]; # missing inputs: pyrainbird
     "raincloud" = ps: with ps; [ ]; # missing inputs: raincloudy
     "rainforest_eagle" = ps: with ps; [ ]; # missing inputs: eagle200_reader uEagle
-    "rainmachine" = ps: with ps; [ ]; # missing inputs: regenmaschine
+    "rainmachine" = ps: with ps; [ regenmaschine ];
     "random" = ps: with ps; [ ];
     "raspihats" = ps: with ps; [ smbus-cffi ]; # missing inputs: raspihats
     "raspyrfm" = ps: with ps; [ ]; # missing inputs: raspyrfm-client
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 3beae286962..3fc5c65ac81 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6654,6 +6654,8 @@ in {
 
   reflink = callPackage ../development/python-modules/reflink { };
 
+  regenmaschine = callPackage ../development/python-modules/regenmaschine { };
+
   regex = callPackage ../development/python-modules/regex { };
 
   regional = callPackage ../development/python-modules/regional { };