diff --git a/src/crewai/crews/crew_output.py b/src/crewai/crews/crew_output.py
index f14badf53..f5c7b2fc7 100644
--- a/src/crewai/crews/crew_output.py
+++ b/src/crewai/crews/crew_output.py
@@ -1,7 +1,8 @@
 import json
-from typing import Any, Callable, Dict, Optional, Union, AbstractSet, Mapping
+from typing import Any, Callable, Dict, Optional
 
 from pydantic import BaseModel, Field
+from pydantic.main import IncEx
 from typing_extensions import Literal
 
 from crewai.tasks.output_format import OutputFormat
@@ -22,7 +23,7 @@ class CrewOutput(BaseModel):
     tasks_output: list[TaskOutput] = Field(
         description="Output of each task", default=[]
     )
-    token_usage: UsageMetrics = Field(description="Processed token summary", default_factory=dict)
+    token_usage: UsageMetrics = Field(description="Processed token summary", default_factory=lambda: {})
 
     def model_json(self) -> str:
         """Get the JSON representation of the output."""
@@ -36,8 +37,8 @@ class CrewOutput(BaseModel):
         self,
         *,
         indent: Optional[int] = None,
-        include: Optional[Union[AbstractSet[int], AbstractSet[str], Mapping[int, Any], Mapping[str, Any]]] = None,
-        exclude: Optional[Union[AbstractSet[int], AbstractSet[str], Mapping[int, Any], Mapping[str, Any]]] = None,
+        include: Optional[IncEx] = None,
+        exclude: Optional[IncEx] = None,
         context: Optional[Any] = None,
         by_alias: bool = False,
         exclude_unset: bool = False,
diff --git a/src/crewai/tasks/task_output.py b/src/crewai/tasks/task_output.py
index b0fb84c55..fbb458b6c 100644
--- a/src/crewai/tasks/task_output.py
+++ b/src/crewai/tasks/task_output.py
@@ -1,7 +1,8 @@
 import json
-from typing import Any, Callable, Dict, Optional, Union, AbstractSet, Mapping
+from typing import Any, Callable, Dict, Optional
 
 from pydantic import BaseModel, Field, model_validator
+from pydantic.main import IncEx
 from typing_extensions import Literal
 
 from crewai.tasks.output_format import OutputFormat
@@ -51,8 +52,8 @@ class TaskOutput(BaseModel):
         self,
         *,
         indent: Optional[int] = None,
-        include: Optional[Union[AbstractSet[int], AbstractSet[str], Mapping[int, Any], Mapping[str, Any]]] = None,
-        exclude: Optional[Union[AbstractSet[int], AbstractSet[str], Mapping[int, Any], Mapping[str, Any]]] = None,
+        include: Optional[IncEx] = None,
+        exclude: Optional[IncEx] = None,
         context: Optional[Any] = None,
         by_alias: bool = False,
         exclude_unset: bool = False,