diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7c8c5dd8..f75d4eab6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed a `GoogleAssistantContextAggregator` issue where function calls
+  placeholders where not being updated when then function call result was
+  different from a string.
+
 - Fixed an issue that would cause `LLMAssistantContextAggregator` to block
   processing more frames while processing a function call result.
 
diff --git a/src/pipecat/frames/frames.py b/src/pipecat/frames/frames.py
index c2a79461f..6452cbfe4 100644
--- a/src/pipecat/frames/frames.py
+++ b/src/pipecat/frames/frames.py
@@ -384,7 +384,7 @@ class FunctionCallResultFrame(DataFrame):
 
     function_name: str
     tool_call_id: str
-    arguments: str
+    arguments: Any
     result: Any
     properties: Optional[FunctionCallResultProperties] = None
 
@@ -633,8 +633,8 @@ class FunctionCallInProgressFrame(SystemFrame):
 
     function_name: str
     tool_call_id: str
-    arguments: str
-    cancel_on_interruption: bool
+    arguments: Any
+    cancel_on_interruption: bool = False
 
 
 @dataclass
diff --git a/src/pipecat/services/anthropic.py b/src/pipecat/services/anthropic.py
index 6a95d04e2..3e369075a 100644
--- a/src/pipecat/services/anthropic.py
+++ b/src/pipecat/services/anthropic.py
@@ -725,7 +725,7 @@ class AnthropicAssistantContextAggregator(LLMAssistantContextAggregator):
         )
 
     async def _update_function_call_result(
-        self, function_name: str, tool_call_id: str, result: str
+        self, function_name: str, tool_call_id: str, result: Any
     ):
         for message in self._context.messages:
             if message["role"] == "user":
diff --git a/src/pipecat/services/google/google.py b/src/pipecat/services/google/google.py
index bfddce46d..554d9cb6b 100644
--- a/src/pipecat/services/google/google.py
+++ b/src/pipecat/services/google/google.py
@@ -601,23 +601,18 @@ class GoogleAssistantContextAggregator(OpenAIAssistantContextAggregator):
 
     async def handle_function_call_result(self, frame: FunctionCallResultFrame):
         if frame.result:
-            if not isinstance(frame.result, str):
-                return
-
-            response = {"response": frame.result}
-
+            await self._update_function_call_result(
+                frame.function_name, frame.tool_call_id, frame.result
+            )
+        else:
+            response = {"response": "COMPLETED"}
             await self._update_function_call_result(
                 frame.function_name, frame.tool_call_id, response
             )
-        else:
-            await self._update_function_call_result(
-                frame.function_name, frame.tool_call_id, "COMPLETED"
-            )
 
     async def handle_function_call_cancel(self, frame: FunctionCallCancelFrame):
-        await self._update_function_call_result(
-            frame.function_name, frame.tool_call_id, "CANCELLED"
-        )
+        response = {"response": "CANCELLED"}
+        await self._update_function_call_result(frame.function_name, frame.tool_call_id, response)
 
     async def _update_function_call_result(
         self, function_name: str, tool_call_id: str, result: Any
@@ -626,11 +621,12 @@ class GoogleAssistantContextAggregator(OpenAIAssistantContextAggregator):
             if message.role == "user":
                 for part in message.parts:
                     if part.function_response and part.function_response.id == tool_call_id:
-                        part.function_response.response = {"response": result}
+                        part.function_response.response = result
 
     async def handle_user_image_frame(self, frame: UserImageRawFrame):
+        response = {"response": "COMPLETED"}
         await self._update_function_call_result(
-            frame.request.function_name, frame.request.tool_call_id, "COMPLETED"
+            frame.request.function_name, frame.request.tool_call_id, response
         )
         self._context.add_image_frame_message(
             format=frame.format,
diff --git a/src/pipecat/services/openai.py b/src/pipecat/services/openai.py
index ff7bc0442..cb1edea72 100644
--- a/src/pipecat/services/openai.py
+++ b/src/pipecat/services/openai.py
@@ -613,7 +613,7 @@ class OpenAIAssistantContextAggregator(LLMAssistantContextAggregator):
         )
 
     async def _update_function_call_result(
-        self, function_name: str, tool_call_id: str, result: str
+        self, function_name: str, tool_call_id: str, result: Any
     ):
         for message in self._context.messages:
             if (