diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ff7a6118..3d585698b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Added `hume` optional dependency group for Hume AI TTS integration.
 
+### Changed
+
+- Updated default `GoogleLLMService` model to `gemini-2.5-flash`.
+
 ### Fixed
 
 - Fixed RTVI incoming message handling, broken in 0.0.87.
diff --git a/src/pipecat/services/google/llm.py b/src/pipecat/services/google/llm.py
index b7b3bb50c..b45c276d0 100644
--- a/src/pipecat/services/google/llm.py
+++ b/src/pipecat/services/google/llm.py
@@ -686,7 +686,7 @@ class GoogleLLMService(LLMService):
         self,
         *,
         api_key: str,
-        model: str = "gemini-2.0-flash",
+        model: str = "gemini-2.5-flash",
         params: Optional[InputParams] = None,
         system_instruction: Optional[str] = None,
         tools: Optional[List[Dict[str, Any]]] = None,