diff --git a/langchain/src/vectorstores/googlevertexai.ts b/langchain/src/vectorstores/googlevertexai.ts
index 0deaf7cfa5a3..852e70abf978 100644
--- a/langchain/src/vectorstores/googlevertexai.ts
+++ b/langchain/src/vectorstores/googlevertexai.ts
@@ -344,6 +344,12 @@ export class MatchingEngine extends VectorStore implements MatchingEngineArgs {
    */
   index: string;
 
+  /**
+   * Explicitly set Google Auth credentials if you cannot get them from google auth application-default login
+   * This is useful for serverless or autoscaling environments like Fargate
+   */
+  authOptions: GoogleAuthOptions;
+
   /**
    * The id for the "deployed index", which is an identifier in the
    * index endpoint that references the index (but is not the index id)
@@ -376,6 +382,7 @@ export class MatchingEngine extends VectorStore implements MatchingEngineArgs {
     this.location = args.location ?? this.location;
     this.indexEndpoint = args.indexEndpoint ?? this.indexEndpoint;
     this.index = args.index ?? this.index;
+    this.authOptions = args.authOptions ?? this.authOptions;
 
     this.callerParams = args.callerParams ?? this.callerParams;
     this.callerOptions = args.callerOptions ?? this.callerOptions;
@@ -386,6 +393,7 @@ export class MatchingEngine extends VectorStore implements MatchingEngineArgs {
       location: this.location,
       apiVersion: this.apiVersion,
       indexEndpoint: this.indexEndpoint,
+      authOptions: this.authOptions,
     };
     this.indexEndpointClient = new IndexEndpointConnection(
       indexClientParams,
@@ -397,6 +405,7 @@ export class MatchingEngine extends VectorStore implements MatchingEngineArgs {
       location: this.location,
       apiVersion: this.apiVersion,
       index: this.index,
+      authOptions: this.authOptions,
     };
     this.removeDatapointClient = new RemoveDatapointConnection(
       removeClientParams,
@@ -408,6 +417,7 @@ export class MatchingEngine extends VectorStore implements MatchingEngineArgs {
       location: this.location,
       apiVersion: this.apiVersion,
       index: this.index,
+      authOptions: this.authOptions,
     };
     this.upsertDatapointClient = new UpsertDatapointConnection(
       upsertClientParams,
@@ -613,6 +623,7 @@ export class MatchingEngine extends VectorStore implements MatchingEngineArgs {
       apiVersion: this.apiVersion,
       location: this.location,
       deployedIndexId,
+      authOptions: this.authOptions,
     };
     const connection = new FindNeighborsConnection(
       findNeighborsParams,