diff --git a/homeassistant/components/bang_olufsen/__init__.py b/homeassistant/components/bang_olufsen/__init__.py
index c8ba1f1c3dc..be99f8b5b7d 100644
--- a/homeassistant/components/bang_olufsen/__init__.py
+++ b/homeassistant/components/bang_olufsen/__init__.py
@@ -8,6 +8,7 @@ from aiohttp.client_exceptions import (
     ClientConnectorError,
     ClientOSError,
     ServerTimeoutError,
+    WSMessageTypeError,
 )
 from mozart_api.exceptions import ApiException
 from mozart_api.mozart_client import MozartClient
@@ -62,6 +63,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: BangOlufsenConfigEntry)
         ServerTimeoutError,
         ApiException,
         TimeoutError,
+        WSMessageTypeError,
     ) as error:
         await client.close_api_client()
         raise ConfigEntryNotReady(f"Unable to connect to {entry.title}") from error
diff --git a/homeassistant/components/bang_olufsen/manifest.json b/homeassistant/components/bang_olufsen/manifest.json
index 1565c98e979..b29fe9731de 100644
--- a/homeassistant/components/bang_olufsen/manifest.json
+++ b/homeassistant/components/bang_olufsen/manifest.json
@@ -6,6 +6,6 @@
   "documentation": "https://www.home-assistant.io/integrations/bang_olufsen",
   "integration_type": "device",
   "iot_class": "local_push",
-  "requirements": ["mozart-api==4.1.1.116.3"],
+  "requirements": ["mozart-api==4.1.1.116.4"],
   "zeroconf": ["_bangolufsen._tcp.local."]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 0ef33d06220..3f619ac2e0e 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1403,7 +1403,7 @@ motionblindsble==0.1.3
 motioneye-client==0.3.14
 
 # homeassistant.components.bang_olufsen
-mozart-api==4.1.1.116.3
+mozart-api==4.1.1.116.4
 
 # homeassistant.components.mullvad
 mullvad-api==1.0.0
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 3a57a4e2a19..bfddb35b041 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1172,7 +1172,7 @@ motionblindsble==0.1.3
 motioneye-client==0.3.14
 
 # homeassistant.components.bang_olufsen
-mozart-api==4.1.1.116.3
+mozart-api==4.1.1.116.4
 
 # homeassistant.components.mullvad
 mullvad-api==1.0.0