diff --git a/homeassistant/components/cast/helpers.py b/homeassistant/components/cast/helpers.py
index b39f8a6ef25..0f0dc5f6358 100644
--- a/homeassistant/components/cast/helpers.py
+++ b/homeassistant/components/cast/helpers.py
@@ -3,6 +3,7 @@ from typing import Optional, Tuple
 
 import attr
 from pychromecast import dial
+from pychromecast.const import CAST_MANUFACTURERS
 
 from .const import DEFAULT_PORT
 
@@ -20,7 +21,6 @@ class ChromecastInfo:
     uuid = attr.ib(
         type=Optional[str], converter=attr.converters.optional(str), default=None
     )  # always convert UUID to string if not None
-    manufacturer = attr.ib(type=str, default="")
     model_name = attr.ib(type=str, default="")
     friendly_name = attr.ib(type=Optional[str], default=None)
     is_dynamic_group = attr.ib(type=Optional[bool], default=None)
@@ -52,6 +52,13 @@ class ChromecastInfo:
         """Return the host+port tuple."""
         return self.host, self.port
 
+    @property
+    def manufacturer(self) -> str:
+        """Return the manufacturer."""
+        if not self.model_name:
+            return None
+        return CAST_MANUFACTURERS.get(self.model_name.lower(), "Google Inc.")
+
     def fill_out_missing_chromecast_info(self) -> "ChromecastInfo":
         """Return a new ChromecastInfo object with missing attributes filled in.
 
@@ -62,22 +69,8 @@ class ChromecastInfo:
             # audio group, so checking via HTTP won't give us any new information.
             return self
 
-        # Fill out missing information via HTTP dial.
         if self.is_audio_group:
             is_dynamic_group = False
-            http_group_status = None
-            dynamic_groups = []
-            if self.uuid:
-                http_group_status = dial.get_multizone_status(
-                    self.host,
-                    services=[self.service],
-                    zconf=ChromeCastZeroconf.get_zeroconf(),
-                )
-                if http_group_status is not None:
-                    dynamic_groups = [
-                        str(g.uuid) for g in http_group_status.dynamic_groups
-                    ]
-                    is_dynamic_group = self.uuid in dynamic_groups
 
             return ChromecastInfo(
                 service=self.service,
@@ -85,11 +78,11 @@ class ChromecastInfo:
                 port=self.port,
                 uuid=self.uuid,
                 friendly_name=self.friendly_name,
-                manufacturer=self.manufacturer,
                 model_name=self.model_name,
                 is_dynamic_group=is_dynamic_group,
             )
 
+        # Fill out some missing information (friendly_name, uuid) via HTTP dial.
         http_device_status = dial.get_device_status(
             self.host, services=[self.service], zconf=ChromeCastZeroconf.get_zeroconf()
         )
@@ -103,8 +96,7 @@ class ChromecastInfo:
             port=self.port,
             uuid=(self.uuid or http_device_status.uuid),
             friendly_name=(self.friendly_name or http_device_status.friendly_name),
-            manufacturer=(self.manufacturer or http_device_status.manufacturer),
-            model_name=(self.model_name or http_device_status.model_name),
+            model_name=self.model_name,
         )
 
     def same_dynamic_group(self, other: "ChromecastInfo") -> bool:
diff --git a/homeassistant/components/cast/manifest.json b/homeassistant/components/cast/manifest.json
index f054c7c8e42..0a7ce383118 100644
--- a/homeassistant/components/cast/manifest.json
+++ b/homeassistant/components/cast/manifest.json
@@ -3,7 +3,7 @@
   "name": "Google Cast",
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/cast",
-  "requirements": ["pychromecast==4.2.0"],
+  "requirements": ["pychromecast==4.2.3"],
   "after_dependencies": ["cloud"],
   "zeroconf": ["_googlecast._tcp.local."],
   "codeowners": ["@emontnemery"]
diff --git a/requirements_all.txt b/requirements_all.txt
index 82e1601e907..80390c66f6b 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1205,7 +1205,7 @@ pycfdns==0.0.1
 pychannels==1.0.0
 
 # homeassistant.components.cast
-pychromecast==4.2.0
+pychromecast==4.2.3
 
 # homeassistant.components.cmus
 pycmus==0.1.1
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 51c3e1a83b1..e091ca2554c 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -475,7 +475,7 @@ pyblackbird==0.5
 pybotvac==0.0.17
 
 # homeassistant.components.cast
-pychromecast==4.2.0
+pychromecast==4.2.3
 
 # homeassistant.components.coolmaster
 pycoolmasternet==0.0.4
diff --git a/tests/components/cast/test_media_player.py b/tests/components/cast/test_media_player.py
index 2f21a1c0f31..3a40e9065d3 100644
--- a/tests/components/cast/test_media_player.py
+++ b/tests/components/cast/test_media_player.py
@@ -182,9 +182,7 @@ async def test_internal_discovery_callback_fill_out(hass):
 
     discover_cast, _ = await async_setup_cast_internal_discovery(hass)
     info = get_fake_chromecast_info(uuid=None)
-    full_info = attr.evolve(
-        info, model_name="google home", friendly_name="Speaker", uuid=FakeUUID
-    )
+    full_info = attr.evolve(info, model_name="", friendly_name="Speaker", uuid=FakeUUID)
 
     with patch(
         "homeassistant.components.cast.helpers.dial.get_device_status",