diff --git a/homeassistant/components/google_generative_ai_conversation/manifest.json b/homeassistant/components/google_generative_ai_conversation/manifest.json
index 829dd0d43bb..c23c68982a5 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==1.38.0"]
+  "requirements": ["google-genai==1.56.0"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 43fce72148d..47b2dbfcc29 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1093,7 +1093,7 @@ google-cloud-speech==2.31.1
 google-cloud-texttospeech==2.25.1
 
 # homeassistant.components.google_generative_ai_conversation
-google-genai==1.38.0
+google-genai==1.56.0
 
 # homeassistant.components.google_travel_time
 google-maps-routing==0.6.15
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index a4eaa6a2f0a..8c62fbf9d07 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -969,7 +969,7 @@ google-cloud-speech==2.31.1
 google-cloud-texttospeech==2.25.1
 
 # homeassistant.components.google_generative_ai_conversation
-google-genai==1.38.0
+google-genai==1.56.0
 
 # homeassistant.components.google_travel_time
 google-maps-routing==0.6.15
diff --git a/tests/components/google_generative_ai_conversation/test_conversation.py b/tests/components/google_generative_ai_conversation/test_conversation.py
index 9085e90f634..833b6eaefb6 100644
--- a/tests/components/google_generative_ai_conversation/test_conversation.py
+++ b/tests/components/google_generative_ai_conversation/test_conversation.py
@@ -221,6 +221,7 @@ async def test_function_call(
         "function_response": {
             "id": None,
             "name": "test_tool",
+            "parts": None,
             "response": {
                 "result": "Test response",
             },
@@ -228,6 +229,7 @@ async def test_function_call(
             "will_continue": None,
         },
         "inline_data": None,
+        "media_resolution": None,
         "text": None,
         "thought": None,
         "thought_signature": None,