diff --git a/homeassistant/components/cync/manifest.json b/homeassistant/components/cync/manifest.json
index 99088ad4576..16f77debdfa 100644
--- a/homeassistant/components/cync/manifest.json
+++ b/homeassistant/components/cync/manifest.json
@@ -7,5 +7,5 @@
   "integration_type": "hub",
   "iot_class": "cloud_push",
   "quality_scale": "bronze",
-  "requirements": ["pycync==0.4.2"]
+  "requirements": ["pycync==0.4.3"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 796f430d16b..b14139066e2 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1929,7 +1929,7 @@ pycsspeechtts==1.0.8
 # pycups==2.0.4
 
 # homeassistant.components.cync
-pycync==0.4.2
+pycync==0.4.3
 
 # homeassistant.components.daikin
 pydaikin==2.17.1
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 97128dd254c..ae7eb8da0fc 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1618,7 +1618,7 @@ pycsspeechtts==1.0.8
 # pycups==2.0.4
 
 # homeassistant.components.cync
-pycync==0.4.2
+pycync==0.4.3
 
 # homeassistant.components.daikin
 pydaikin==2.17.1