diff --git a/pkgs/development/python-modules/mypyllant/default.nix b/pkgs/development/python-modules/mypyllant/default.nix
index 77f1f0c9980f..82563845796b 100644
--- a/pkgs/development/python-modules/mypyllant/default.nix
+++ b/pkgs/development/python-modules/mypyllant/default.nix
@@ -26,14 +26,14 @@
 
 buildPythonPackage rec {
   pname = "mypyllant";
-  version = "0.9.8";
+  version = "0.9.9";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "signalkraft";
     repo = "myPyllant";
     tag = "v${version}";
-    hash = "sha256-eneAFJ4xRL8EKj8Act/YcW7Gx0B85u0g3LTWPlI/B/0=";
+    hash = "sha256-wvqlTlcNy/ue2yfrQyS93vfRSOTsHbvARI+7BKuUuYs=";
   };
 
   build-system = [
diff --git a/pkgs/servers/home-assistant/custom-components/mypyllant/migrate-to-new-pytest-homeassistant-custom-component.patch b/pkgs/servers/home-assistant/custom-components/mypyllant/migrate-to-new-pytest-homeassistant-custom-component.patch
deleted file mode 100644
index 34bf35a26129..000000000000
--- a/pkgs/servers/home-assistant/custom-components/mypyllant/migrate-to-new-pytest-homeassistant-custom-component.patch
+++ /dev/null
@@ -1,21 +0,0 @@
-diff --git a/tests/test_services.py b/tests/test_services.py
-index 1fb07b3..f7a552c 100644
---- a/tests/test_services.py
-+++ b/tests/test_services.py
-@@ -3,6 +3,7 @@ from dataclasses import asdict
- 
- import pytest
- from homeassistant.helpers.entity_registry import DATA_REGISTRY, EntityRegistry
-+from homeassistant.helpers.trigger import TRIGGERS, TRIGGER_PLATFORM_SUBSCRIPTIONS
- from homeassistant.loader import (
-     DATA_COMPONENTS,
-     DATA_INTEGRATIONS,
-@@ -31,6 +32,8 @@ def setup_hass_for_service_test(hass):
-     hass.data[DATA_PRELOAD_PLATFORMS] = {}
-     hass.data[DATA_MISSING_PLATFORMS] = {}
-     hass.data[DATA_REGISTRY] = EntityRegistry(hass)
-+    hass.data[TRIGGER_PLATFORM_SUBSCRIPTIONS] = []
-+    hass.data[TRIGGERS] = {}
-     return hass
- 
- 
diff --git a/pkgs/servers/home-assistant/custom-components/mypyllant/package.nix b/pkgs/servers/home-assistant/custom-components/mypyllant/package.nix
index 4faa428147a9..58d1d6b962e9 100644
--- a/pkgs/servers/home-assistant/custom-components/mypyllant/package.nix
+++ b/pkgs/servers/home-assistant/custom-components/mypyllant/package.nix
@@ -19,20 +19,15 @@
 buildHomeAssistantComponent rec {
   owner = "signalkraft";
   domain = "mypyllant";
-  version = "0.9.9";
+  version = "0.9.10";
 
   src = fetchFromGitHub {
     owner = "signalkraft";
     repo = "mypyllant-component";
     tag = "v${version}";
-    hash = "sha256-6T8SGAP2535VqZmvSeITpMIa0SBJhnWsOKM1Y66WhHE=";
+    hash = "sha256-4IfLd+NEaWyxgdnAz7YGM/6i0usoqwgKlBJFzDOlJ4A=";
   };
 
-  patches = [
-    # Migrates tests to the new version of `pytest-homeassistant-custom-component` (see https://github.com/signalkraft/mypyllant-component/pull/394).
-    ./migrate-to-new-pytest-homeassistant-custom-component.patch
-  ];
-
   dependencies = [
     mypyllant
     voluptuous