diff --git a/backend/requirements.txt b/backend/requirements.txt
index 1b14ac1429..7646421e89 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -48,8 +48,8 @@ google-generativeai==0.8.5
 tiktoken
 mcp==1.14.1
 
-langchain==0.3.26
-langchain-community==0.3.27
+langchain==0.3.27
+langchain-community==0.3.29
 
 fake-useragent==2.2.0
 chromadb==1.0.20
diff --git a/pyproject.toml b/pyproject.toml
index 09fcce07fb..3581aaf95d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,8 +54,8 @@ dependencies = [
     "google-genai==1.32.0",
     "google-generativeai==0.8.5",
 
-    "langchain==0.3.26",
-    "langchain-community==0.3.27",
+    "langchain==0.3.27",
+    "langchain-community==0.3.29",
 
     "fake-useragent==2.2.0",
     "chromadb==1.0.20",