diff --git a/packages/microservices/client/client-grpc.ts b/packages/microservices/client/client-grpc.ts
index 95819d0a5..298a9e152 100644
--- a/packages/microservices/client/client-grpc.ts
+++ b/packages/microservices/client/client-grpc.ts
@@ -31,7 +31,14 @@ export class ClientGrpcProxy extends ClientProxy implements ClientGrpc {
       require('@grpc/grpc-js'),
     );
 
-    grpcProtoLoaderPackage = loadPackage(protoLoader, ClientGrpcProxy.name);
+    grpcProtoLoaderPackage = loadPackage(
+      protoLoader,
+      ClientGrpcProxy.name,
+      () =>
+        protoLoader === GRPC_DEFAULT_PROTO_LOADER
+          ? require('@grpc/proto-loader')
+          : require(protoLoader),
+    );
     this.grpcClients = this.createClients();
   }
 
@@ -278,7 +285,7 @@ export class ClientGrpcProxy extends ClientProxy implements ClientGrpc {
       const packageDefinition =
         this.getOptionsProp(this.options, 'packageDefinition') ||
         grpcProtoLoaderPackage.loadSync(file, loader);
-      
+
       const packageObject =
         grpcPackage.loadPackageDefinition(packageDefinition);
       return packageObject;
diff --git a/packages/microservices/server/server-grpc.ts b/packages/microservices/server/server-grpc.ts
index b744c2e1b..9606765ad 100644
--- a/packages/microservices/server/server-grpc.ts
+++ b/packages/microservices/server/server-grpc.ts
@@ -48,7 +48,14 @@ export class ServerGrpc extends Server implements CustomTransportStrategy {
     grpcPackage = this.loadPackage('@grpc/grpc-js', ServerGrpc.name, () =>
       require('@grpc/grpc-js'),
     );
-    grpcProtoLoaderPackage = this.loadPackage(protoLoader, ServerGrpc.name);
+    grpcProtoLoaderPackage = this.loadPackage(
+      protoLoader,
+      ServerGrpc.name,
+      () =>
+        protoLoader === GRPC_DEFAULT_PROTO_LOADER
+          ? require('@grpc/proto-loader')
+          : require(protoLoader),
+    );
   }
 
   public async listen(