diff --git a/packages/google-cloud-bigquery-datatransfer/package.json b/packages/google-cloud-bigquery-datatransfer/package.json
index a3238a592fa..3c5e371e4fd 100644
--- a/packages/google-cloud-bigquery-datatransfer/package.json
+++ b/packages/google-cloud-bigquery-datatransfer/package.json
@@ -37,8 +37,7 @@
     "predocs-test": "npm run docs"
   },
   "dependencies": {
-    "google-gax": "^1.0.0",
-    "lodash.merge": "^4.6.1"
+    "google-gax": "^1.0.0"
   },
   "devDependencies": {
     "codecov": "^3.5.0",
diff --git a/packages/google-cloud-bigquery-datatransfer/src/v1/data_transfer_service_client.js b/packages/google-cloud-bigquery-datatransfer/src/v1/data_transfer_service_client.js
index 9bdbba3fbb2..bb46dc3455b 100644
--- a/packages/google-cloud-bigquery-datatransfer/src/v1/data_transfer_service_client.js
+++ b/packages/google-cloud-bigquery-datatransfer/src/v1/data_transfer_service_client.js
@@ -16,7 +16,6 @@
 
 const gapicConfig = require('./data_transfer_service_client_config.json');
 const gax = require('google-gax');
-const merge = require('lodash.merge');
 const path = require('path');
 
 const VERSION = require('../../package.json').version;
@@ -91,12 +90,9 @@ class DataTransferServiceClient {
     }
 
     // Load the applicable protos.
-    const protos = merge(
-      {},
-      gaxGrpc.loadProto(
-        path.join(__dirname, '..', '..', 'protos'),
-        'google/cloud/bigquery/datatransfer/v1/datatransfer.proto'
-      )
+    const protos = gaxGrpc.loadProto(
+      path.join(__dirname, '..', '..', 'protos'),
+      ['google/cloud/bigquery/datatransfer/v1/datatransfer.proto']
     );
 
     // This API contains "path templates"; forward-slash-separated
@@ -243,7 +239,7 @@ class DataTransferServiceClient {
    *   `projects/{project_id}/dataSources/{data_source_id}`
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -304,7 +300,7 @@ class DataTransferServiceClient {
    *   resources in a page.
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Array, ?Object, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -416,7 +412,7 @@ class DataTransferServiceClient {
    *   resources in a page.
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @returns {Stream}
    *   An object stream which emits an object representing [DataSource]{@link google.cloud.bigquery.datatransfer.v1.DataSource} on 'data' event.
    *
@@ -479,7 +475,7 @@ class DataTransferServiceClient {
    *     the user to copy the code and paste it in the application.
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -561,7 +557,7 @@ class DataTransferServiceClient {
    *     the user to copy the code and paste it in the application.
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -621,7 +617,7 @@ class DataTransferServiceClient {
    *   `projects/{project_id}/transferConfigs/{config_id}`
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error)} [callback]
    *   The function which will be called with the result of the API call.
    * @returns {Promise} - The promise which resolves when API call finishes.
@@ -667,7 +663,7 @@ class DataTransferServiceClient {
    *   `projects/{project_id}/transferConfigs/{config_id}`
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -729,7 +725,7 @@ class DataTransferServiceClient {
    *   resources in a page.
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Array, ?Object, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -843,7 +839,7 @@ class DataTransferServiceClient {
    *   resources in a page.
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @returns {Stream}
    *   An object stream which emits an object representing [TransferConfig]{@link google.cloud.bigquery.datatransfer.v1.TransferConfig} on 'data' event.
    *
@@ -896,7 +892,7 @@ class DataTransferServiceClient {
    *   This object should have the same structure as [Timestamp]{@link google.protobuf.Timestamp}
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -957,7 +953,7 @@ class DataTransferServiceClient {
    *   `projects/{project_id}/transferConfigs/{config_id}/runs/{run_id}`
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -1011,7 +1007,7 @@ class DataTransferServiceClient {
    *   `projects/{project_id}/transferConfigs/{config_id}/runs/{run_id}`
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error)} [callback]
    *   The function which will be called with the result of the API call.
    * @returns {Promise} - The promise which resolves when API call finishes.
@@ -1072,7 +1068,7 @@ class DataTransferServiceClient {
    *   The number should be among the values of [RunAttempt]{@link google.cloud.bigquery.datatransfer.v1.RunAttempt}
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Array, ?Object, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -1193,7 +1189,7 @@ class DataTransferServiceClient {
    *   The number should be among the values of [RunAttempt]{@link google.cloud.bigquery.datatransfer.v1.RunAttempt}
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @returns {Stream}
    *   An object stream which emits an object representing [TransferRun]{@link google.cloud.bigquery.datatransfer.v1.TransferRun} on 'data' event.
    *
@@ -1244,7 +1240,7 @@ class DataTransferServiceClient {
    *   The number should be among the values of [MessageSeverity]{@link google.cloud.bigquery.datatransfer.v1.MessageSeverity}
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Array, ?Object, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
@@ -1361,7 +1357,7 @@ class DataTransferServiceClient {
    *   The number should be among the values of [MessageSeverity]{@link google.cloud.bigquery.datatransfer.v1.MessageSeverity}
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @returns {Stream}
    *   An object stream which emits an object representing [TransferMessage]{@link google.cloud.bigquery.datatransfer.v1.TransferMessage} on 'data' event.
    *
@@ -1406,7 +1402,7 @@ class DataTransferServiceClient {
    *   `projects/{project_id}/dataSources/{data_source_id}`
    * @param {Object} [options]
    *   Optional parameters. You can override the default settings for this call, e.g, timeout,
-   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/global.html#CallOptions} for the details.
+   *   retries, paginations, etc. See [gax.CallOptions]{@link https://googleapis.github.io/gax-nodejs/interfaces/CallOptions.html} for the details.
    * @param {function(?Error, ?Object)} [callback]
    *   The function which will be called with the result of the API call.
    *
diff --git a/packages/google-cloud-bigquery-datatransfer/synth.metadata b/packages/google-cloud-bigquery-datatransfer/synth.metadata
index 89e2457be88..a8631ab8b6e 100644
--- a/packages/google-cloud-bigquery-datatransfer/synth.metadata
+++ b/packages/google-cloud-bigquery-datatransfer/synth.metadata
@@ -1,26 +1,26 @@
 {
-  "updateTime": "2019-05-17T19:41:49.587881Z",
+  "updateTime": "2019-05-21T11:08:45.880007Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.19.0",
-        "dockerImage": "googleapis/artman@sha256:d3df563538225ac6caac45d8ad86499500211d1bcb2536955a6dbda15e1b368e"
+        "version": "0.20.0",
+        "dockerImage": "googleapis/artman@sha256:3246adac900f4bdbd62920e80de2e5877380e44036b3feae13667ec255ebf5ec"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "99efb1441b7c2aeb75c69f8baf9b61d4221bb744",
-        "internalRef": "248724297"
+        "sha": "32a10f69e2c9ce15bba13ab1ff928bacebb25160",
+        "internalRef": "249058354"
       }
     },
     {
       "template": {
         "name": "node_library",
         "origin": "synthtool.gcp",
-        "version": "2019.4.10"
+        "version": "2019.5.2"
       }
     }
   ],