diff --git a/homeassistant/components/knx/manifest.json b/homeassistant/components/knx/manifest.json
index 60feb3c7419..7c1fa368b83 100644
--- a/homeassistant/components/knx/manifest.json
+++ b/homeassistant/components/knx/manifest.json
@@ -3,7 +3,7 @@
   "name": "KNX",
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/knx",
-  "requirements": ["xknx==2.2.0"],
+  "requirements": ["xknx==2.3.0"],
   "codeowners": ["@Julius2342", "@farmio", "@marvin-w"],
   "quality_scale": "platinum",
   "iot_class": "local_push",
diff --git a/requirements_all.txt b/requirements_all.txt
index e5f2052df31..26de341bfef 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2622,7 +2622,7 @@ xboxapi==2.0.1
 xiaomi-ble==0.14.3
 
 # homeassistant.components.knx
-xknx==2.2.0
+xknx==2.3.0
 
 # homeassistant.components.bluesound
 # homeassistant.components.fritz
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 92efa00145c..5c020798742 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1844,7 +1844,7 @@ xbox-webapi==2.0.11
 xiaomi-ble==0.14.3
 
 # homeassistant.components.knx
-xknx==2.2.0
+xknx==2.3.0
 
 # homeassistant.components.bluesound
 # homeassistant.components.fritz
diff --git a/tests/components/knx/conftest.py b/tests/components/knx/conftest.py
index b6735df3624..a67847d26fd 100644
--- a/tests/components/knx/conftest.py
+++ b/tests/components/knx/conftest.py
@@ -58,6 +58,9 @@ class KNXTestKit:
 
         async def patch_xknx_start():
             """Patch `xknx.start` for unittests."""
+            self.xknx.cemi_handler.send_telegram = AsyncMock(
+                side_effect=self._outgoing_telegrams.put
+            )
             # after XKNX.__init__() to not overwrite it by the config entry again
             # before StateUpdater starts to avoid slow down of tests
             self.xknx.rate_limit = 0
@@ -72,7 +75,6 @@ class KNXTestKit:
             mock = Mock()
             mock.start = AsyncMock(side_effect=patch_xknx_start)
             mock.stop = AsyncMock()
-            mock.send_telegram = AsyncMock(side_effect=self._outgoing_telegrams.put)
             return mock
 
         def fish_xknx(*args, **kwargs):