diff --git a/requirements.txt b/requirements.txt
index 54dc732..95963d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ ibm-cloud-sdk-core==3.17.1
 ibm-watson==7.0.1
 idna==3.4
 iniconfig==2.0.0
-langchain==0.0.308
+langchain==0.0.309
 langsmith==0.0.42
 marshmallow==3.20.1
 multidict==6.0.4