diff --git a/Makefile b/Makefile
index 5519b6d7c23..8a1099c5b8e 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,6 @@ api_docs_build:
 API_PKG ?= text-splitters
 
 api_docs_quick_preview:
-	poetry run pip install "pydantic<2"
 	poetry run python docs/api_reference/create_api_rst.py $(API_PKG)
 	cd docs/api_reference && poetry run make html
 	poetry run python docs/api_reference/scripts/custom_formatter.py docs/api_reference/_build/html/
diff --git a/libs/core/langchain_core/language_models/chat_models.py b/libs/core/langchain_core/language_models/chat_models.py
index 9e403296142..5691c615bd0 100644
--- a/libs/core/langchain_core/language_models/chat_models.py
+++ b/libs/core/langchain_core/language_models/chat_models.py
@@ -195,20 +195,14 @@ class BaseChatModel(BaseLanguageModel[BaseMessage], ABC):
 
     """  # noqa: E501
 
-    # TODO(0.3): Figure out how to re-apply deprecated decorator
-    # callback_manager: Optional[BaseCallbackManager] = deprecated(
-    #     name="callback_manager", since="0.1.7", removal="1.0", alternative="callbacks"
-    # )(
-    #     Field(
-    #         default=None,
-    #         exclude=True,
-    #         description="Callback manager to add to the run trace.",
-    #     )
-    # )
-    callback_manager: Optional[BaseCallbackManager] = Field(
-        default=None,
-        exclude=True,
-        description="Callback manager to add to the run trace.",
+    callback_manager: Optional[BaseCallbackManager] = deprecated(
+        name="callback_manager", since="0.1.7", removal="1.0", alternative="callbacks"
+    )(
+        Field(
+            default=None,
+            exclude=True,
+            description="Callback manager to add to the run trace.",
+        )
     )
 
     rate_limiter: Optional[BaseRateLimiter] = Field(default=None, exclude=True)