diff --git a/pkgs/servers/home-assistant/custom-components/gtfs-realtime/package.nix b/pkgs/servers/home-assistant/custom-components/gtfs-realtime/package.nix
new file mode 100644
index 000000000000..a40b1d009632
--- /dev/null
+++ b/pkgs/servers/home-assistant/custom-components/gtfs-realtime/package.nix
@@ -0,0 +1,47 @@
+{
+  lib,
+  buildHomeAssistantComponent,
+  fetchFromGitHub,
+  gtfs-station-stop,
+  pytest-cov-stub,
+  pytest-freezer,
+  pytest-homeassistant-custom-component,
+  pytestCheckHook,
+}:
+
+buildHomeAssistantComponent rec {
+  owner = "bcpearce";
+  domain = "gtfs_realtime";
+  version = "0.3.2";
+
+  src = fetchFromGitHub {
+    owner = "bcpearce";
+    repo = "homeassistant-gtfs-realtime";
+    tag = version;
+    hash = "sha256-G3OtDoF+td7IC+zVXJ+c/chdtYMoq6cStZ3dV8eyUZI=";
+  };
+
+  dependencies = [ gtfs-station-stop ];
+
+  nativeCheckInputs = [
+    pytest-cov-stub
+    pytest-freezer
+    pytest-homeassistant-custom-component
+    pytestCheckHook
+  ];
+
+  disabledTests = [
+    # upstream snapshot is stale
+    "test_diagnostics"
+  ];
+
+  ignoreVersionRequirement = [ "gtfs_station_stop" ];
+
+  meta = {
+    changelog = "https://github.com/bcpearce/homeassistant-gtfs-realtime/releases/tag/${src.tag}";
+    description = "GTFS Realtime transit arrivals for Home Assistant";
+    homepage = "https://github.com/bcpearce/homeassistant-gtfs-realtime";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.stepbrobd ];
+  };
+}