diff --git a/src/crewai/task.py b/src/crewai/task.py
index 5662239f1..6f17ea033 100644
--- a/src/crewai/task.py
+++ b/src/crewai/task.py
@@ -305,7 +305,7 @@ class Task(BaseModel):
         if directory and not os.path.exists(directory):
             os.makedirs(directory)
 
-        with open(self.output_file, "w") as file:  # type: ignore # Argument 1 to "open" has incompatible type "str | None"; expected "int | str | bytes | PathLike[str] | PathLike[bytes]"
+        with open(self.output_file, "w", encoding='utf-8') as file:  # type: ignore # Argument 1 to "open" has incompatible type "str | None"; expected "int | str | bytes | PathLike[str] | PathLike[bytes]"
             file.write(result)
         return None