diff --git a/packages/google-cloud-language/.jsdoc.js b/packages/google-cloud-language/.jsdoc.js
index a9e74d68ae0..413c188891d 100644
--- a/packages/google-cloud-language/.jsdoc.js
+++ b/packages/google-cloud-language/.jsdoc.js
@@ -40,7 +40,7 @@ module.exports = {
     includePattern: '\\.js$'
   },
   templates: {
-    copyright: 'Copyright 2019 Google, LLC.',
+    copyright: 'Copyright 2020 Google LLC',
     includeDate: false,
     sourceFiles: false,
     systemName: '@google-cloud/language',
diff --git a/packages/google-cloud-language/.prettierrc.js b/packages/google-cloud-language/.prettierrc.js
index 08cba3775be..d1b95106f4c 100644
--- a/packages/google-cloud-language/.prettierrc.js
+++ b/packages/google-cloud-language/.prettierrc.js
@@ -4,7 +4,7 @@
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
-//      http://www.apache.org/licenses/LICENSE-2.0
+//      https://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
diff --git a/packages/google-cloud-language/package.json b/packages/google-cloud-language/package.json
index 88b07d849a0..e76b000101d 100644
--- a/packages/google-cloud-language/package.json
+++ b/packages/google-cloud-language/package.json
@@ -31,7 +31,7 @@
   ],
   "scripts": {
     "docs": "jsdoc -c .jsdoc.js",
-    "lint": "gts fix && eslint --fix samples/*.js",
+    "lint": "gts fix",
     "samples-test": "cd samples/ && npm link ../ && npm install && npm test && cd ../",
     "system-test": "mocha build/system-test",
     "test": "c8 mocha build/test",
@@ -42,10 +42,10 @@
     "compile-protos": "compileProtos src",
     "predocs-test": "npm run docs",
     "prepare": "npm run compile",
-    "prelint": "cd samples; npm link ../; npm i"
+    "prelint": "cd samples; npm link ../; npm install"
   },
   "dependencies": {
-    "google-gax": "^2.0.1"
+    "google-gax": "^2.1.0"
   },
   "devDependencies": {
     "@types/mocha": "^7.0.0",
@@ -53,11 +53,7 @@
     "@types/sinon": "^7.5.2",
     "c8": "^7.0.0",
     "codecov": "^3.0.2",
-    "eslint": "^6.0.0",
-    "eslint-config-prettier": "^6.0.0",
-    "eslint-plugin-node": "^11.0.0",
-    "eslint-plugin-prettier": "^3.0.0",
-    "gts": "2.0.0",
+    "gts": "^2.0.0",
     "jsdoc": "^3.5.5",
     "jsdoc-fresh": "^1.0.1",
     "jsdoc-region-tag": "^1.0.2",
diff --git a/packages/google-cloud-language/protos/google/cloud/language/v1/language_service.proto b/packages/google-cloud-language/protos/google/cloud/language/v1/language_service.proto
index 41d92f344c7..e8e4fd8d005 100644
--- a/packages/google-cloud-language/protos/google/cloud/language/v1/language_service.proto
+++ b/packages/google-cloud-language/protos/google/cloud/language/v1/language_service.proto
@@ -137,11 +137,11 @@ message Document {
   // The language of the document (if not specified, the language is
   // automatically detected). Both ISO and BCP-47 language codes are
   // accepted.<br>
-  // [Language Support](/natural-language/docs/languages)
-  // lists currently supported languages for each API method.
-  // If the language (either specified by the caller or automatically detected)
-  // is not supported by the called API method, an `INVALID_ARGUMENT` error
-  // is returned.
+  // [Language
+  // Support](https://cloud.google.com/natural-language/docs/languages) lists
+  // currently supported languages for each API method. If the language (either
+  // specified by the caller or automatically detected) is not supported by the
+  // called API method, an `INVALID_ARGUMENT` error is returned.
   string language = 4;
 }
 
@@ -954,7 +954,7 @@ message TextSpan {
 // Represents a category returned from the text classifier.
 message ClassificationCategory {
   // The name of the category representing the document, from the [predefined
-  // taxonomy](/natural-language/docs/categories).
+  // taxonomy](https://cloud.google.com/natural-language/docs/categories).
   string name = 1;
 
   // The classifier's confidence of the category. Number represents how certain
diff --git a/packages/google-cloud-language/protos/google/cloud/language/v1beta2/language_service.proto b/packages/google-cloud-language/protos/google/cloud/language/v1beta2/language_service.proto
index 384cdf91923..afca1205cb9 100644
--- a/packages/google-cloud-language/protos/google/cloud/language/v1beta2/language_service.proto
+++ b/packages/google-cloud-language/protos/google/cloud/language/v1beta2/language_service.proto
@@ -138,11 +138,11 @@ message Document {
   // The language of the document (if not specified, the language is
   // automatically detected). Both ISO and BCP-47 language codes are
   // accepted.<br>
-  // [Language Support](/natural-language/docs/languages)
-  // lists currently supported languages for each API method.
-  // If the language (either specified by the caller or automatically detected)
-  // is not supported by the called API method, an `INVALID_ARGUMENT` error
-  // is returned.
+  // [Language
+  // Support](https://cloud.google.com/natural-language/docs/languages) lists
+  // currently supported languages for each API method. If the language (either
+  // specified by the caller or automatically detected) is not supported by the
+  // called API method, an `INVALID_ARGUMENT` error is returned.
   string language = 4;
 }
 
@@ -961,7 +961,7 @@ message TextSpan {
 // Represents a category returned from the text classifier.
 message ClassificationCategory {
   // The name of the category representing the document, from the [predefined
-  // taxonomy](/natural-language/docs/categories).
+  // taxonomy](https://cloud.google.com/natural-language/docs/categories).
   string name = 1;
 
   // The classifier's confidence of the category. Number represents how certain
@@ -1089,7 +1089,8 @@ message AnnotateTextRequest {
 
     // Classify the full document into categories. If this is true,
     // the API will use the default model which classifies into a
-    // [predefined taxonomy](/natural-language/docs/categories).
+    // [predefined
+    // taxonomy](https://cloud.google.com/natural-language/docs/categories).
     bool classify_text = 6;
   }
 
diff --git a/packages/google-cloud-language/protos/protos.js b/packages/google-cloud-language/protos/protos.js
index f41182c5b22..d083c20a387 100644
--- a/packages/google-cloud-language/protos/protos.js
+++ b/packages/google-cloud-language/protos/protos.js
@@ -28,7 +28,7 @@
     var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;
     
     // Exported root namespace
-    var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});
+    var $root = $protobuf.roots._google_cloud_language_3_8_0_protos || ($protobuf.roots._google_cloud_language_3_8_0_protos = {});
     
     $root.google = (function() {
     
diff --git a/packages/google-cloud-language/synth.metadata b/packages/google-cloud-language/synth.metadata
index 9efc07f8a8b..c25e86cf054 100644
--- a/packages/google-cloud-language/synth.metadata
+++ b/packages/google-cloud-language/synth.metadata
@@ -1,5 +1,14 @@
 {
-  "updateTime": "2020-03-31T19:47:14.953977Z",
+  "updateTime": "2020-04-11T00:27:32.512826Z",
+  "sources": [
+    {
+      "git": {
+        "name": "synthtool",
+        "remote": "https://github.com/googleapis/synthtool.git",
+        "sha": "6f32150677c9784f3c3a7e1949472bd29c9d72c5"
+      }
+    }
+  ],
   "destinations": [
     {
       "client": {
diff --git a/packages/google-cloud-language/synth.py b/packages/google-cloud-language/synth.py
index ecd49e1940d..9a2d6538d14 100644
--- a/packages/google-cloud-language/synth.py
+++ b/packages/google-cloud-language/synth.py
@@ -32,5 +32,5 @@
 
 # Node.js specific cleanup
 subprocess.run(['npm', 'install'])
-subprocess.run(['npm', 'run', 'fix'])
+subprocess.run(['npm', 'run', 'lint'])
 subprocess.run(['npx', 'compileProtos', 'src'])
diff --git a/packages/google-cloud-language/test/gapic_language_service_v1.ts b/packages/google-cloud-language/test/gapic_language_service_v1.ts
index e8d0c1e2cd7..c9b4dda10af 100644
--- a/packages/google-cloud-language/test/gapic_language_service_v1.ts
+++ b/packages/google-cloud-language/test/gapic_language_service_v1.ts
@@ -212,7 +212,7 @@ describe('v1.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.analyzeSentiment(request);
       }, expectedError);
       assert(
@@ -302,7 +302,7 @@ describe('v1.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.analyzeEntities(request);
       }, expectedError);
       assert(
@@ -394,7 +394,7 @@ describe('v1.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.analyzeEntitySentiment(request);
       }, expectedError);
       assert(
@@ -484,7 +484,7 @@ describe('v1.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.analyzeSyntax(request);
       }, expectedError);
       assert(
@@ -574,7 +574,7 @@ describe('v1.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.classifyText(request);
       }, expectedError);
       assert(
@@ -664,7 +664,7 @@ describe('v1.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.annotateText(request);
       }, expectedError);
       assert(
diff --git a/packages/google-cloud-language/test/gapic_language_service_v1beta2.ts b/packages/google-cloud-language/test/gapic_language_service_v1beta2.ts
index 3818651db69..94377b9223e 100644
--- a/packages/google-cloud-language/test/gapic_language_service_v1beta2.ts
+++ b/packages/google-cloud-language/test/gapic_language_service_v1beta2.ts
@@ -212,7 +212,7 @@ describe('v1beta2.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.analyzeSentiment(request);
       }, expectedError);
       assert(
@@ -302,7 +302,7 @@ describe('v1beta2.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.analyzeEntities(request);
       }, expectedError);
       assert(
@@ -394,7 +394,7 @@ describe('v1beta2.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.analyzeEntitySentiment(request);
       }, expectedError);
       assert(
@@ -484,7 +484,7 @@ describe('v1beta2.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.analyzeSyntax(request);
       }, expectedError);
       assert(
@@ -574,7 +574,7 @@ describe('v1beta2.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.classifyText(request);
       }, expectedError);
       assert(
@@ -664,7 +664,7 @@ describe('v1beta2.LanguageServiceClient', () => {
         undefined,
         expectedError
       );
-      assert.rejects(async () => {
+      await assert.rejects(async () => {
         await client.annotateText(request);
       }, expectedError);
       assert(