diff --git a/pkgs/development/python-modules/pysnooz/bleak-compat.patch b/pkgs/development/python-modules/pysnooz/bleak-compat.patch
new file mode 100644
index 000000000000..1f5c1c2ed070
--- /dev/null
+++ b/pkgs/development/python-modules/pysnooz/bleak-compat.patch
@@ -0,0 +1,39 @@
+diff --git a/tests/test_api.py b/tests/test_api.py
+index 3289252..30388b2 100644
+--- a/tests/test_api.py
++++ b/tests/test_api.py
+@@ -25,7 +25,7 @@ DBUS_ERROR_UNKNOWN = BleakDBusError("org.bluez.Error.SomethingNotHandled", [])
+ @pytest.fixture()
+ def mock_client() -> MockSnoozClient:
+     return MockSnoozClient(
+-        BLEDevice("Snooz-ABCD", "00:00:00:00:12:34", [], 0), SnoozDeviceModel.ORIGINAL
++        BLEDevice("Snooz-ABCD", "00:00:00:00:12:34", []), SnoozDeviceModel.ORIGINAL
+     )
+ 
+ 
+diff --git a/tests/test_device.py b/tests/test_device.py
+index f24a7c6..38240e4 100644
+--- a/tests/test_device.py
++++ b/tests/test_device.py
+@@ -127,7 +127,7 @@ def snooz(
+     model_name = (
+         MODEL_NAME_BREEZ if model == SnoozDeviceModel.BREEZ else MODEL_NAME_SNOOZ
+     )
+-    device = BLEDevice("AA:BB:CC:DD:EE:FF", f"{model_name}-EEFF", [], 0)
++    device = BLEDevice("AA:BB:CC:DD:EE:FF", f"{model_name}-EEFF", [])
+     password = "AABBCCDDEEFF"
+     adv_data = SnoozAdvertisementData(
+         model,
+diff --git a/tests/test_testing.py b/tests/test_testing.py
+index d8ce6f2..7a1002d 100644
+--- a/tests/test_testing.py
++++ b/tests/test_testing.py
+@@ -22,7 +22,7 @@ from pysnooz.testing import MockSnoozClient, MockSnoozDevice
+ 
+ from . import SUPPORTED_MODELS
+ 
+-TEST_BLE_DEVICE = BLEDevice("00:00:00:00:AB:CD", "Snooz-ABCD", [], 0)
++TEST_BLE_DEVICE = BLEDevice("00:00:00:00:AB:CD", "Snooz-ABCD", [])
+ 
+ 
+ @pytest.mark.asyncio
diff --git a/pkgs/development/python-modules/pysnooz/default.nix b/pkgs/development/python-modules/pysnooz/default.nix
index 7a0d35c59c9d..5edc25c0c78d 100644
--- a/pkgs/development/python-modules/pysnooz/default.nix
+++ b/pkgs/development/python-modules/pysnooz/default.nix
@@ -20,7 +20,7 @@
 buildPythonPackage rec {
   pname = "pysnooz";
   version = "0.10.0";
-  format = "pyproject";
+  pyproject = true;
 
   disabled = pythonOlder "3.9";
 
@@ -31,15 +31,20 @@ buildPythonPackage rec {
     hash = "sha256-jOXmaJprU35sdNRrBBx/YUyiDyyaE1qodWksXkTSEe0=";
   };
 
+  patches = [
+    # https://github.com/AustinBrunkhorst/pysnooz/pull/20
+    ./bleak-compat.patch
+  ];
+
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace 'transitions = "^0.8.11"' 'transitions = ">=0.8.11"' \
-      --replace 'Events = "^0.4"' 'Events = ">=0.4"'
+      --replace-fail 'transitions = "^0.8.11"' 'transitions = ">=0.8.11"' \
+      --replace-fail 'Events = "^0.4"' 'Events = ">=0.4"'
   '';
 
-  nativeBuildInputs = [ poetry-core ];
+  build-system = [ poetry-core ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     bleak
     bleak-retry-connector
     bluetooth-sensor-state-data