diff --git a/samples/index_tuning_sample/requirements.txt b/samples/index_tuning_sample/requirements.txt
index 0b9bb489..b6f466ef 100644
--- a/samples/index_tuning_sample/requirements.txt
+++ b/samples/index_tuning_sample/requirements.txt
@@ -1,3 +1,3 @@
-langchain-google-alloydb-pg==0.6.0
+langchain-google-alloydb-pg==0.7.0
 langchain==0.3.0
-langchain-google-vertexai==1.0.10
\ No newline at end of file
+langchain-google-vertexai==2.0.7
diff --git a/samples/langchain_on_vertexai/requirements.txt b/samples/langchain_on_vertexai/requirements.txt
index cfceef42..35e62604 100644
--- a/samples/langchain_on_vertexai/requirements.txt
+++ b/samples/langchain_on_vertexai/requirements.txt
@@ -1,5 +1,5 @@
-google-cloud-aiplatform[reasoningengine,langchain]==1.68.0
+google-cloud-aiplatform[reasoningengine,langchain]==1.72
 langchain-google-alloydb-pg==0.7.0
-langchain-google-vertexai==1.0.10
-google-cloud-resource-manager==1.12.5
-langchain-community==0.2.19
\ No newline at end of file
+langchain-google-vertexai==2.0.7
+google-cloud-resource-manager==1.13.0
+langchain-community==0.3.7
diff --git a/samples/requirements.txt b/samples/requirements.txt
index 96b5429a..439acca6 100644
--- a/samples/requirements.txt
+++ b/samples/requirements.txt
@@ -1,5 +1,5 @@
-google-cloud-aiplatform[reasoningengine,langchain]==1.66.0
-google-cloud-resource-manager==1.12.5
-langchain-community==0.2.19
-langchain-google-alloydb-pg==0.6.0
-langchain-google-vertexai==1.0.10
\ No newline at end of file
+google-cloud-aiplatform[reasoningengine,langchain]==1.72
+google-cloud-resource-manager==1.13.0
+langchain-community==0.3.7
+langchain-google-alloydb-pg==0.7.0
+langchain-google-vertexai==2.0.7