diff --git a/metagpt/context_mixin.py b/metagpt/context_mixin.py
index c83400669..94c2dcd37 100644
--- a/metagpt/context_mixin.py
+++ b/metagpt/context_mixin.py
@@ -19,6 +19,11 @@ class ContextMixin(BaseModel):
 
     model_config = ConfigDict(arbitrary_types_allowed=True)
 
+    # Pydantic has bug on _private_attr when using inheritance, so we use private_* instead
+    # - https://github.com/pydantic/pydantic/issues/7142
+    # - https://github.com/pydantic/pydantic/issues/7083
+    # - https://github.com/pydantic/pydantic/issues/7091
+
     # Env/Role/Action will use this context as private context, or use self.context as public context
     private_context: Optional[Context] = Field(default=None, exclude=True)
     # Env/Role/Action will use this config as private config, or use self.context.config as public config