diff --git a/custom_components/nhc2/__init__.py b/custom_components/nhc2/__init__.py
index 7c33783c..5c758b24 100644
--- a/custom_components/nhc2/__init__.py
+++ b/custom_components/nhc2/__init__.py
@@ -12,7 +12,7 @@
 from .const import DOMAIN, KEY_GATEWAY, CONF_SWITCHES_AS_LIGHTS
 from .helpers import extract_versions
 
-REQUIREMENTS = ['nhc2-coco==1.1.2']
+REQUIREMENTS = ['nhc2-coco==1.1.3']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/custom_components/nhc2/light.py b/custom_components/nhc2/light.py
index 2718cde9..3475d921 100644
--- a/custom_components/nhc2/light.py
+++ b/custom_components/nhc2/light.py
@@ -34,7 +34,7 @@ def __init__(self, nhc2light: CoCoLight, optimistic=True):
         self._optimistic = optimistic
         self._is_on = nhc2light.is_on
         if self._nhc2light.support_brightness:
-            self._brightness = int((self._nhc2light.brightness + 1) * 2.54)
+            self._brightness = round(self._nhc2light.brightness * 2.55)
         else:
             self._brightness = None
         nhc2light.on_change = self._on_change
@@ -42,7 +42,7 @@ def __init__(self, nhc2light: CoCoLight, optimistic=True):
     def _on_change(self):
         self._is_on = self._nhc2light.is_on
         if self._nhc2light.support_brightness:
-            self._brightness = int((self._nhc2light.brightness + 1) * 2.54)
+            self._brightness = round(self._nhc2light.brightness * 2.55)
         self.schedule_update_ha_state()
 
     def turn_off(self, **kwargs) -> None:
@@ -59,12 +59,10 @@ async def async_turn_on(self, **kwargs):
         brightness = kwargs.get(ATTR_BRIGHTNESS)
 
         if self._nhc2light.support_brightness and brightness is not None:
-            self._nhc2light.brightness(int((brightness / 2.54) - 1))
+            self._nhc2light.set_brightness(round((brightness) / 2.55))
 
         if self._optimistic:
             self._is_on = True
-            if self._nhc2light.support_brightness and brightness is not None:
-                self._brightness = int((int((brightness / 2.54) - 1) + 1) * 2.54)
             self.schedule_update_ha_state()
 
     async def async_turn_off(self, **kwargs):
diff --git a/custom_components/nhc2/manifest.json b/custom_components/nhc2/manifest.json
index 2a032f52..1176d8f1 100644
--- a/custom_components/nhc2/manifest.json
+++ b/custom_components/nhc2/manifest.json
@@ -1,7 +1,7 @@
 {
   "domain": "nhc2",
   "name": "Niko Home Control II",
-  "requirements": ["nhc2-coco==1.1.2"],
+  "requirements": ["nhc2-coco==1.1.3"],
   "config_flow": true,
   "issue_tracker": "https://github.com/filipvh/hass-nhc2/issues",
   "documentation": "https://github.com/filipvh/hass-nhc2/blob/master/README.md",