diff --git a/docs/docs/reference/prebuilt.md b/docs/docs/reference/prebuilt.md
index 9e42c40fc..bd3ab9a8e 100644
--- a/docs/docs/reference/prebuilt.md
+++ b/docs/docs/reference/prebuilt.md
@@ -10,6 +10,7 @@
       members:
         - ToolNode
         - InjectedState
+        - InjectedStore
         - tools_condition
 
 ::: langgraph.prebuilt.tool_validator
diff --git a/libs/langgraph/langgraph/prebuilt/tool_node.py b/libs/langgraph/langgraph/prebuilt/tool_node.py
index d01ce82db..91e6483a1 100644
--- a/libs/langgraph/langgraph/prebuilt/tool_node.py
+++ b/libs/langgraph/langgraph/prebuilt/tool_node.py
@@ -461,6 +461,9 @@ class InjectedStore(InjectedToolArg):
     the store will be automatically propagated to the tools with InjectedStore args
     when using ToolNode.
 
+    !!! Warning
+        `InjectedStore` annotation requires `langchain-core >= 0.3.8`
+
     Example:
         ```python
         from typing import Any