diff --git a/homeassistant/components/letpot/manifest.json b/homeassistant/components/letpot/manifest.json
index 691584abc13..d08b5f70a51 100644
--- a/homeassistant/components/letpot/manifest.json
+++ b/homeassistant/components/letpot/manifest.json
@@ -7,5 +7,5 @@
   "integration_type": "hub",
   "iot_class": "cloud_push",
   "quality_scale": "bronze",
-  "requirements": ["letpot==0.3.0"]
+  "requirements": ["letpot==0.4.0"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 6bb68d58a50..67d5910562c 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1305,7 +1305,7 @@ led-ble==1.1.4
 lektricowifi==0.0.43
 
 # homeassistant.components.letpot
-letpot==0.3.0
+letpot==0.4.0
 
 # homeassistant.components.foscam
 libpyfoscam==1.2.2
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 0f7cef8c557..bebc407d809 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1104,7 +1104,7 @@ led-ble==1.1.4
 lektricowifi==0.0.43
 
 # homeassistant.components.letpot
-letpot==0.3.0
+letpot==0.4.0
 
 # homeassistant.components.foscam
 libpyfoscam==1.2.2
diff --git a/tests/components/letpot/__init__.py b/tests/components/letpot/__init__.py
index 829d1df54f3..ac552f907d4 100644
--- a/tests/components/letpot/__init__.py
+++ b/tests/components/letpot/__init__.py
@@ -2,7 +2,7 @@
 
 import datetime
 
-from letpot.models import AuthenticationInfo, LetPotDeviceStatus
+from letpot.models import AuthenticationInfo, LetPotDeviceErrors, LetPotDeviceStatus
 
 from homeassistant.core import HomeAssistant
 
@@ -26,6 +26,7 @@ AUTHENTICATION = AuthenticationInfo(
 )
 
 STATUS = LetPotDeviceStatus(
+    errors=LetPotDeviceErrors(low_water=False),
     light_brightness=500,
     light_mode=1,
     light_schedule_end=datetime.time(12, 10),
@@ -38,5 +39,4 @@ STATUS = LetPotDeviceStatus(
     raw=[77, 0, 1, 18, 98, 1, 0, 0, 1, 1, 1, 0, 1, 12, 0, 12, 10, 1, 244, 0, 0, 0],
     system_on=True,
     system_sound=False,
-    system_state=0,
 )