diff --git a/homeassistant/components/deconz/manifest.json b/homeassistant/components/deconz/manifest.json
index 2cba87f74d6..6a47864375e 100644
--- a/homeassistant/components/deconz/manifest.json
+++ b/homeassistant/components/deconz/manifest.json
@@ -3,7 +3,7 @@
   "name": "deCONZ",
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/deconz",
-  "requirements": ["pydeconz==72"],
+  "requirements": ["pydeconz==73"],
   "ssdp": [
     {
       "manufacturer": "Royal Philips Electronics"
diff --git a/requirements_all.txt b/requirements_all.txt
index 0faab26721f..aa17999d7f1 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1295,7 +1295,7 @@ pydaikin==2.3.1
 pydanfossair==0.1.0
 
 # homeassistant.components.deconz
-pydeconz==72
+pydeconz==73
 
 # homeassistant.components.delijn
 pydelijn==0.6.1
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 5519f7f3858..37fe829b0f1 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -625,7 +625,7 @@ pycountry==19.8.18
 pydaikin==2.3.1
 
 # homeassistant.components.deconz
-pydeconz==72
+pydeconz==73
 
 # homeassistant.components.dexcom
 pydexcom==0.2.0
diff --git a/tests/components/deconz/test_light.py b/tests/components/deconz/test_light.py
index d070bd5b420..4e9f6b3d512 100644
--- a/tests/components/deconz/test_light.py
+++ b/tests/components/deconz/test_light.py
@@ -67,6 +67,15 @@ LIGHTS = {
         "type": "On and Off light",
         "uniqueid": "00:00:00:00:00:00:00:03-00",
     },
+    "5": {
+        "ctmax": 1000,
+        "ctmin": 0,
+        "id": "Tunable white light with bad maxmin values id",
+        "name": "Tunable white light with bad maxmin values",
+        "state": {"on": True, "colormode": "ct", "ct": 2500, "reachable": True},
+        "type": "Tunable white light",
+        "uniqueid": "00:00:00:00:00:00:00:04-00",
+    },
 }
 
 
@@ -101,7 +110,7 @@ async def test_lights_and_groups(hass):
     assert "light.on_off_switch" not in gateway.deconz_ids
     assert "light.on_off_light" in gateway.deconz_ids
 
-    assert len(hass.states.async_all()) == 5
+    assert len(hass.states.async_all()) == 6
 
     rgb_light = hass.states.get("light.rgb_light")
     assert rgb_light.state == "on"
@@ -117,6 +126,15 @@ async def test_lights_and_groups(hass):
     assert tunable_white_light.attributes["min_mireds"] == 155
     assert tunable_white_light.attributes["supported_features"] == 2
 
+    tunable_white_light_bad_maxmin = hass.states.get(
+        "light.tunable_white_light_with_bad_maxmin_values"
+    )
+    assert tunable_white_light_bad_maxmin.state == "on"
+    assert tunable_white_light_bad_maxmin.attributes["color_temp"] == 2500
+    assert tunable_white_light_bad_maxmin.attributes["max_mireds"] == 650
+    assert tunable_white_light_bad_maxmin.attributes["min_mireds"] == 140
+    assert tunable_white_light_bad_maxmin.attributes["supported_features"] == 2
+
     on_off_light = hass.states.get("light.on_off_light")
     assert on_off_light.state == "on"
     assert on_off_light.attributes["supported_features"] == 0
@@ -256,7 +274,7 @@ async def test_disable_light_groups(hass):
     assert "light.empty_group" not in gateway.deconz_ids
     assert "light.on_off_switch" not in gateway.deconz_ids
     # 3 entities
-    assert len(hass.states.async_all()) == 4
+    assert len(hass.states.async_all()) == 5
 
     rgb_light = hass.states.get("light.rgb_light")
     assert rgb_light is not None
@@ -281,7 +299,7 @@ async def test_disable_light_groups(hass):
     assert "light.empty_group" not in gateway.deconz_ids
     assert "light.on_off_switch" not in gateway.deconz_ids
     # 3 entities
-    assert len(hass.states.async_all()) == 5
+    assert len(hass.states.async_all()) == 6
 
     hass.config_entries.async_update_entry(
         gateway.config_entry, options={deconz.gateway.CONF_ALLOW_DECONZ_GROUPS: False}
@@ -294,4 +312,4 @@ async def test_disable_light_groups(hass):
     assert "light.empty_group" not in gateway.deconz_ids
     assert "light.on_off_switch" not in gateway.deconz_ids
     # 3 entities
-    assert len(hass.states.async_all()) == 4
+    assert len(hass.states.async_all()) == 5