diff --git a/pkgs/development/python-modules/twentemilieu/default.nix b/pkgs/development/python-modules/twentemilieu/default.nix
new file mode 100644
index 00000000000..fb561732174
--- /dev/null
+++ b/pkgs/development/python-modules/twentemilieu/default.nix
@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, aiohttp
+, yarl
+, aresponses
+, pytest-asyncio
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "twentemilieu";
+  version = "0.3.0";
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "frenck";
+    repo = "python-twentemilieu";
+    rev = "v${version}";
+    sha256 = "1ff35sh73m2s7fh4d8p2pjwdbfljswr8b8lpcjybz8nsh0286xph";
+  };
+
+  propagatedBuildInputs = [
+    aiohttp
+    yarl
+  ];
+
+  checkInputs = [
+    aresponses
+    pytest-asyncio
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "twentemilieu" ];
+
+  meta = with lib; {
+    description = "Python client for Twente Milieu";
+    homepage = "https://github.com/frenck/python-twentemilieu";
+    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 febfc7fdea7..eccbbf2529d 100644
--- a/pkgs/servers/home-assistant/component-packages.nix
+++ b/pkgs/servers/home-assistant/component-packages.nix
@@ -866,7 +866,7 @@
     "trend" = ps: with ps; [ numpy ];
     "tts" = ps: with ps; [ aiohttp-cors mutagen ];
     "tuya" = ps: with ps; [ tuyaha ];
-    "twentemilieu" = ps: with ps; [ ]; # missing inputs: twentemilieu
+    "twentemilieu" = ps: with ps; [ twentemilieu ];
     "twilio" = ps: with ps; [ aiohttp-cors twilio ];
     "twilio_call" = ps: with ps; [ aiohttp-cors twilio ];
     "twilio_sms" = ps: with ps; [ aiohttp-cors twilio ];
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index af01d5424a9..20c80b1ba2a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8015,6 +8015,8 @@ in {
 
   tweepy = callPackage ../development/python-modules/tweepy { };
 
+  twentemilieu = callPackage ../development/python-modules/twentemilieu { };
+
   twiggy = callPackage ../development/python-modules/twiggy { };
 
   twilio = callPackage ../development/python-modules/twilio { };