diff --git a/homeassistant/components/vesync/manifest.json b/homeassistant/components/vesync/manifest.json
index 195a3315341..99603dc32d2 100644
--- a/homeassistant/components/vesync/manifest.json
+++ b/homeassistant/components/vesync/manifest.json
@@ -16,5 +16,5 @@
   "iot_class": "cloud_polling",
   "loggers": ["pyvesync"],
   "quality_scale": "bronze",
-  "requirements": ["pyvesync==3.4.1"]
+  "requirements": ["pyvesync==3.4.2"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index b026935a945..1f00906e1a1 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2785,7 +2785,7 @@ pyvera==0.3.16
 pyversasense==0.0.6
 
 # homeassistant.components.vesync
-pyvesync==3.4.1
+pyvesync==3.4.2
 
 # homeassistant.components.vizio
 pyvizio==0.1.61
diff --git a/tests/components/vesync/common.py b/tests/components/vesync/common.py
index ba6cace3785..689780a8b19 100644
--- a/tests/components/vesync/common.py
+++ b/tests/components/vesync/common.py
@@ -56,7 +56,7 @@ DEVICE_FIXTURES: dict[str, list[tuple[str, str, str]]] = {
         ("post", "/cloud/v2/deviceManaged/bypassV2", "air-purifier-detail.json")
     ],
     "Dimmable Light": [
-        ("post", "/cloud/v1/deviceManaged/deviceDetail", "device-detail.json")
+        ("post", "/cloud/v1/deviceManaged/deviceDetail", "dimmable-light-detail.json")
     ],
     "Temperature Light": [
         ("post", "/cloud/v1/deviceManaged/bypass", "light-detail.json")
diff --git a/tests/components/vesync/fixtures/dimmable-light-detail.json b/tests/components/vesync/fixtures/dimmable-light-detail.json
new file mode 100644
index 00000000000..508c73fb75d
--- /dev/null
+++ b/tests/components/vesync/fixtures/dimmable-light-detail.json
@@ -0,0 +1,22 @@
+{
+  "traceId": "1234",
+  "code": 0,
+  "msg": "request success",
+  "module": null,
+  "stacktrace": null,
+  "result": {
+    "deviceName": "Dimmable",
+    "name": "Dimmable",
+    "brightNess": "80",
+    "deviceStatus": "on",
+    "activeTime": 0,
+    "defaultDeviceImg": "https://image.vesync.com/defaultImages/ESL100_Series/icon_dimmable_bulb_80.png",
+    "timer": null,
+    "scheduleCount": 0,
+    "away": null,
+    "schedule": null,
+    "ownerShip": "1",
+    "deviceImg": "https://image.vesync.com/defaultImages/deviceDefaultImages/wifismartbulb_240.png",
+    "connectionStatus": "online"
+  }
+}
diff --git a/tests/components/vesync/snapshots/test_light.ambr b/tests/components/vesync/snapshots/test_light.ambr
index 6d75eefba0a..20ccca55b3e 100644
--- a/tests/components/vesync/snapshots/test_light.ambr
+++ b/tests/components/vesync/snapshots/test_light.ambr
@@ -300,6 +300,8 @@
 # name: test_light_state[Dimmable Light][light.dimmable_light]
   StateSnapshot({
     'attributes': ReadOnlyDict({
+      'brightness': 204,
+      'color_mode': <ColorMode.BRIGHTNESS: 'brightness'>,
       'friendly_name': 'Dimmable Light',
       'supported_color_modes': list([
         <ColorMode.BRIGHTNESS: 'brightness'>,
@@ -311,7 +313,7 @@
     'last_changed': <ANY>,
     'last_reported': <ANY>,
     'last_updated': <ANY>,
-    'state': 'unavailable',
+    'state': 'on',
   })
 # ---
 # name: test_light_state[Dimmer Switch][devices]
diff --git a/tests/components/vesync/snapshots/test_update.ambr b/tests/components/vesync/snapshots/test_update.ambr
index b5c0a65209d..a3f62165857 100644
--- a/tests/components/vesync/snapshots/test_update.ambr
+++ b/tests/components/vesync/snapshots/test_update.ambr
@@ -662,17 +662,27 @@
 # name: test_update_state[Dimmable Light][update.dimmable_light_firmware]
   StateSnapshot({
     'attributes': ReadOnlyDict({
+      'auto_update': False,
       'device_class': 'firmware',
+      'display_precision': 0,
       'entity_picture': '/api/brands/integration/vesync/icon.png',
       'friendly_name': 'Dimmable Light Firmware',
+      'in_progress': False,
+      'installed_version': '1.0.0',
+      'latest_version': '1.0.1',
+      'release_summary': None,
+      'release_url': None,
+      'skipped_version': None,
       'supported_features': <UpdateEntityFeature: 0>,
+      'title': None,
+      'update_percentage': None,
     }),
     'context': <ANY>,
     'entity_id': 'update.dimmable_light_firmware',
     'last_changed': <ANY>,
     'last_reported': <ANY>,
     'last_updated': <ANY>,
-    'state': 'unavailable',
+    'state': 'on',
   })
 # ---
 # name: test_update_state[Dimmer Switch][devices]