diff --git a/appsync-bedrock-subscriptions-cdk/package.json b/appsync-bedrock-subscriptions-cdk/package.json
index eba9598d8..93d526182 100644
--- a/appsync-bedrock-subscriptions-cdk/package.json
+++ b/appsync-bedrock-subscriptions-cdk/package.json
@@ -17,6 +17,7 @@
     "@aws-sdk/protocol-http": "^3.374.0",
     "@aws-sdk/signature-v4": "^3.374.0",
     "@types/aws-lambda": "^8.10.125",
+    "@types/jest": "^29.5.14",
     "@types/node": "18.14.6",
     "aws-cdk": "2.70.0",
     "jest": "^29.5.0",
@@ -25,6 +26,7 @@
   },
   "dependencies": {
     "@aws-sdk/client-bedrock-runtime": "^3.431.0",
+    "@langchain/community": "^0.3.11",
     "@smithy/eventstream-codec": "^2.0.12",
     "@smithy/protocol-http": "^3.0.8",
     "@smithy/signature-v4": "^2.0.12",
@@ -34,4 +36,4 @@
     "constructs": "^10.0.0",
     "langchain": "^0.3.5"
   }
-}
\ No newline at end of file
+}
diff --git a/appsync-bedrock-subscriptions-cdk/src/ask.ts b/appsync-bedrock-subscriptions-cdk/src/ask.ts
index 5a547161f..c60740b0e 100644
--- a/appsync-bedrock-subscriptions-cdk/src/ask.ts
+++ b/appsync-bedrock-subscriptions-cdk/src/ask.ts
@@ -1,7 +1,7 @@
-import { AppSyncResolverEvent } from 'aws-lambda'
-import { ChatBedrock } from 'langchain/chat_models/bedrock'
-import { AppSyncRequestIAM } from "./appsyncRequest"
-import { StringOutputParser } from "langchain/schema/output_parser";
+import { AppSyncResolverEvent } from "aws-lambda";
+import { ChatBedrock } from "@langchain/community/chat_models/bedrock";
+import { AppSyncRequestIAM } from "./appsyncRequest";
+import { StringOutputParser } from "@langchain/core/output_parsers";
 const GRAPHQL_URL = process.env.GRAPHQL_URL || "";
 const REGION = process.env.REGION || 'us-east-1';
 
@@ -39,4 +39,4 @@ exports.handler = async (event: AppSyncResolverEvent<{ chatId: string, prompt: s
             }
         })
     }
-}
\ No newline at end of file
+  }