diff --git a/samples/requirements.txt b/samples/requirements.txt
index 92d16e0a..c876faab 100644
--- a/samples/requirements.txt
+++ b/samples/requirements.txt
@@ -2,4 +2,4 @@ google-cloud-aiplatform[reasoningengine,langchain]==1.97.0
 google-cloud-resource-manager==1.14.2
 langchain-community==0.3.31
 langchain-google-alloydb-pg==0.13.0
-langchain-google-vertexai==2.1.2
+langchain-google-vertexai==3.2.0