diff --git a/pyproject.toml b/pyproject.toml
index d956c2ac32e..98d78ce7f64 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies = [
     "langchain==1.3.11",
     "langchain-anthropic==1.4.8",
     "langchain-aws==1.6.2",
-    "langchain-core==1.4.8",
+    "langchain-core==1.4.9",
     "langchain-google-genai==4.2.7",
     "langchain-huggingface==1.2.2",
     "langchain-mcp-adapters==0.3.0",