diff --git a/pkgs/development/python-modules/hko/default.nix b/pkgs/development/python-modules/hko/default.nix
new file mode 100644
index 000000000000..8c683da8edb2
--- /dev/null
+++ b/pkgs/development/python-modules/hko/default.nix
@@ -0,0 +1,34 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchPypi,
+  poetry-core,
+  aiohttp,
+}:
+
+buildPythonPackage rec {
+  pname = "hko";
+  version = "0.3.2";
+  pyproject = true;
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-6FzdaSaw7sX52wM8HbHFGtKdR2JBg3B2cMZnP7RfQzs=";
+  };
+
+  build-system = [ poetry-core ];
+
+  dependencies = [ aiohttp ];
+
+  # Tests require network access
+  doCheck = false;
+
+  pythonImportsCheck = [ "hko" ];
+
+  meta = {
+    description = "Unofficial Python wrapper for the Hong Kong Observatory public API";
+    homepage = "https://github.com/MisterCommand/python-hko";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.jamiemagee ];
+  };
+}
diff --git a/pkgs/servers/home-assistant/component-packages.nix b/pkgs/servers/home-assistant/component-packages.nix
index f587ffd9164a..e262729f73f5 100644
--- a/pkgs/servers/home-assistant/component-packages.nix
+++ b/pkgs/servers/home-assistant/component-packages.nix
@@ -2292,7 +2292,8 @@
       ];
     "hko" =
       ps: with ps; [
-      ]; # missing inputs: hko
+        hko
+      ];
     "hlk_sw16" =
       ps: with ps; [
         hlk-sw16
@@ -7143,6 +7144,7 @@
     "history"
     "history_stats"
     "hive"
+    "hko"
     "hlk_sw16"
     "holiday"
     "home_connect"
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 516b7463d279..eb1c2e1057ee 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6584,6 +6584,8 @@ self: super: with self; {
 
   hkavr = callPackage ../development/python-modules/hkavr { };
 
+  hko = callPackage ../development/python-modules/hko { };
+
   hledger-utils = callPackage ../development/python-modules/hledger-utils { };
 
   hlk-sw16 = callPackage ../development/python-modules/hlk-sw16 { };