diff --git a/pyproject.toml b/pyproject.toml
index e502859..45b3a01 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ dependencies = [
   "tree-sitter-language-pack==0.10.0",
   "neo4j==5.20.0",
   "fastapi[standard]>=0.115.2",
-  "langchain==0.3.27",
+  "langchain==0.3.30",
   "langchain-anthropic==0.3.22",
   "langchain-openai==0.3.35",
   "langchain-google-genai==2.1.12",