diff --git a/homeassistant/components/google_generative_ai_conversation/manifest.json b/homeassistant/components/google_generative_ai_conversation/manifest.json
index 073215bfaf68..cd44dca3454d 100644
--- a/homeassistant/components/google_generative_ai_conversation/manifest.json
+++ b/homeassistant/components/google_generative_ai_conversation/manifest.json
@@ -8,5 +8,5 @@
   "documentation": "https://www.home-assistant.io/integrations/google_generative_ai_conversation",
   "integration_type": "service",
   "iot_class": "cloud_polling",
-  "requirements": ["google-genai==1.59.0"]
+  "requirements": ["google-genai==2.16.0"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index a23eb646e435..59f066dc5854 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1137,7 +1137,7 @@ google-cloud-speech==2.31.1
 google-cloud-texttospeech==2.25.1
 
 # homeassistant.components.google_generative_ai_conversation
-google-genai==1.59.0
+google-genai==2.16.0
 
 # homeassistant.components.google_health
 google-health-api==0.6.0
diff --git a/tests/components/google_generative_ai_conversation/test_conversation.py b/tests/components/google_generative_ai_conversation/test_conversation.py
index a65f6278e931..8d397de7a79a 100644
--- a/tests/components/google_generative_ai_conversation/test_conversation.py
+++ b/tests/components/google_generative_ai_conversation/test_conversation.py
@@ -274,10 +274,14 @@ async def test_function_call(
         },
         "inline_data": None,
         "media_resolution": None,
+        "part_metadata": None,
         "text": None,
         "thought": None,
         "thought_signature": None,
+        "tool_call": None,
+        "tool_response": None,
         "video_metadata": None,
+        "audio_transcription": None,
     }
 
     # Test history conversion for multi-turn conversation