diff --git a/packages/google-cloud-dialogflow/.nycrc b/packages/google-cloud-dialogflow/.nycrc
index 23e322204ec..367688844eb 100644
--- a/packages/google-cloud-dialogflow/.nycrc
+++ b/packages/google-cloud-dialogflow/.nycrc
@@ -10,7 +10,6 @@
     "**/docs",
     "**/samples",
     "**/scripts",
-    "**/src/**/v*/**/*.js",
     "**/protos",
     "**/test",
     ".jsdoc.js",
diff --git a/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2/intent.proto b/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2/intent.proto
index 9f402c500bf..a4919dbfb4e 100644
--- a/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2/intent.proto
+++ b/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2/intent.proto
@@ -429,6 +429,9 @@ message Intent {
 
       // Required. List items.
       repeated Item items = 2 [(google.api.field_behavior) = REQUIRED];
+
+      // Optional. Subtitle of the list.
+      string subtitle = 3 [(google.api.field_behavior) = OPTIONAL];
     }
 
     // The card for presenting a carousel of options to select from.
@@ -636,10 +639,13 @@ message Intent {
   WebhookState webhook_state = 6 [(google.api.field_behavior) = OPTIONAL];
 
   // Optional. The priority of this intent. Higher numbers represent higher
-  // priorities. If this is zero or unspecified, we use the default
-  // priority 500000.
+  // priorities.
   //
-  // Negative numbers mean that the intent is disabled.
+  // - If the supplied value is unspecified or 0, the service
+  //   translates the value to 500,000, which corresponds to the
+  //   `Normal` priority in the console.
+  // - If the supplied value is negative, the intent is ignored
+  //   in runtime detect intent requests.
   int32 priority = 3 [(google.api.field_behavior) = OPTIONAL];
 
   // Optional. Indicates whether this is a fallback intent.
diff --git a/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/intent.proto b/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/intent.proto
index 9d298677d16..ca27b84c67f 100644
--- a/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/intent.proto
+++ b/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/intent.proto
@@ -437,6 +437,9 @@ message Intent {
 
       // Required. List items.
       repeated Item items = 2;
+
+      // Optional. Subtitle of the list.
+      string subtitle = 3 [(google.api.field_behavior) = OPTIONAL];
     }
 
     // The card for presenting a carousel of options to select from.
@@ -1139,11 +1142,14 @@ message Intent {
   // Optional. Indicates whether webhooks are enabled for the intent.
   WebhookState webhook_state = 6;
 
-  // Optional. The priority of this intent. Higher numbers represent higher
-  // priorities. If this is zero or unspecified, we use the default
-  // priority 500000.
+  // The priority of this intent. Higher numbers represent higher
+  // priorities.
   //
-  // Negative numbers mean that the intent is disabled.
+  // - If the supplied value is unspecified or 0, the service
+  //   translates the value to 500,000, which corresponds to the
+  //   `Normal` priority in the console.
+  // - If the supplied value is negative, the intent is ignored
+  //   in runtime detect intent requests.
   int32 priority = 3;
 
   // Optional. Indicates whether this is a fallback intent.
diff --git a/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/knowledge_base.proto b/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/knowledge_base.proto
index a8adc396173..4bbc7452d5b 100644
--- a/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/knowledge_base.proto
+++ b/packages/google-cloud-dialogflow/protos/google/cloud/dialogflow/v2beta1/knowledge_base.proto
@@ -126,7 +126,7 @@ message KnowledgeBase {
   // Language which represents the KnowledgeBase. When the KnowledgeBase is
   // created/updated, this is populated for all non en-us languages. If not
   // populated, the default language en-us applies.
-  string language_code = 3;
+  string language_code = 4;
 }
 
 // Request message for [KnowledgeBases.ListKnowledgeBases][google.cloud.dialogflow.v2beta1.KnowledgeBases.ListKnowledgeBases].
diff --git a/packages/google-cloud-dialogflow/protos/protos.d.ts b/packages/google-cloud-dialogflow/protos/protos.d.ts
index 7457821529a..e73665aaa24 100644
--- a/packages/google-cloud-dialogflow/protos/protos.d.ts
+++ b/packages/google-cloud-dialogflow/protos/protos.d.ts
@@ -6187,6 +6187,9 @@ export namespace google {
 
                             /** ListSelect items */
                             items?: (google.cloud.dialogflow.v2.Intent.Message.ListSelect.IItem[]|null);
+
+                            /** ListSelect subtitle */
+                            subtitle?: (string|null);
                         }
 
                         /** Represents a ListSelect. */
@@ -6204,6 +6207,9 @@ export namespace google {
                             /** ListSelect items. */
                             public items: google.cloud.dialogflow.v2.Intent.Message.ListSelect.IItem[];
 
+                            /** ListSelect subtitle. */
+                            public subtitle: string;
+
                             /**
                              * Creates a new ListSelect instance using the specified properties.
                              * @param [properties] Properties to set
@@ -18351,6 +18357,9 @@ export namespace google {
 
                             /** ListSelect items */
                             items?: (google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect.IItem[]|null);
+
+                            /** ListSelect subtitle */
+                            subtitle?: (string|null);
                         }
 
                         /** Represents a ListSelect. */
@@ -18368,6 +18377,9 @@ export namespace google {
                             /** ListSelect items. */
                             public items: google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect.IItem[];
 
+                            /** ListSelect subtitle. */
+                            public subtitle: string;
+
                             /**
                              * Creates a new ListSelect instance using the specified properties.
                              * @param [properties] Properties to set
diff --git a/packages/google-cloud-dialogflow/protos/protos.js b/packages/google-cloud-dialogflow/protos/protos.js
index e233e60b2b8..e5a2924009f 100644
--- a/packages/google-cloud-dialogflow/protos/protos.js
+++ b/packages/google-cloud-dialogflow/protos/protos.js
@@ -14620,6 +14620,7 @@
                                  * @interface IListSelect
                                  * @property {string|null} [title] ListSelect title
                                  * @property {Array.<google.cloud.dialogflow.v2.Intent.Message.ListSelect.IItem>|null} [items] ListSelect items
+                                 * @property {string|null} [subtitle] ListSelect subtitle
                                  */
     
                                 /**
@@ -14654,6 +14655,14 @@
                                  */
                                 ListSelect.prototype.items = $util.emptyArray;
     
+                                /**
+                                 * ListSelect subtitle.
+                                 * @member {string} subtitle
+                                 * @memberof google.cloud.dialogflow.v2.Intent.Message.ListSelect
+                                 * @instance
+                                 */
+                                ListSelect.prototype.subtitle = "";
+    
                                 /**
                                  * Creates a new ListSelect instance using the specified properties.
                                  * @function create
@@ -14683,6 +14692,8 @@
                                     if (message.items != null && message.items.length)
                                         for (var i = 0; i < message.items.length; ++i)
                                             $root.google.cloud.dialogflow.v2.Intent.Message.ListSelect.Item.encode(message.items[i], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                                    if (message.subtitle != null && message.hasOwnProperty("subtitle"))
+                                        writer.uint32(/* id 3, wireType 2 =*/26).string(message.subtitle);
                                     return writer;
                                 };
     
@@ -14725,6 +14736,9 @@
                                                 message.items = [];
                                             message.items.push($root.google.cloud.dialogflow.v2.Intent.Message.ListSelect.Item.decode(reader, reader.uint32()));
                                             break;
+                                        case 3:
+                                            message.subtitle = reader.string();
+                                            break;
                                         default:
                                             reader.skipType(tag & 7);
                                             break;
@@ -14772,6 +14786,9 @@
                                                 return "items." + error;
                                         }
                                     }
+                                    if (message.subtitle != null && message.hasOwnProperty("subtitle"))
+                                        if (!$util.isString(message.subtitle))
+                                            return "subtitle: string expected";
                                     return null;
                                 };
     
@@ -14799,6 +14816,8 @@
                                             message.items[i] = $root.google.cloud.dialogflow.v2.Intent.Message.ListSelect.Item.fromObject(object.items[i]);
                                         }
                                     }
+                                    if (object.subtitle != null)
+                                        message.subtitle = String(object.subtitle);
                                     return message;
                                 };
     
@@ -14817,8 +14836,10 @@
                                     var object = {};
                                     if (options.arrays || options.defaults)
                                         object.items = [];
-                                    if (options.defaults)
+                                    if (options.defaults) {
                                         object.title = "";
+                                        object.subtitle = "";
+                                    }
                                     if (message.title != null && message.hasOwnProperty("title"))
                                         object.title = message.title;
                                     if (message.items && message.items.length) {
@@ -14826,6 +14847,8 @@
                                         for (var j = 0; j < message.items.length; ++j)
                                             object.items[j] = $root.google.cloud.dialogflow.v2.Intent.Message.ListSelect.Item.toObject(message.items[j], options);
                                     }
+                                    if (message.subtitle != null && message.hasOwnProperty("subtitle"))
+                                        object.subtitle = message.subtitle;
                                     return object;
                                 };
     
@@ -43742,6 +43765,7 @@
                                  * @interface IListSelect
                                  * @property {string|null} [title] ListSelect title
                                  * @property {Array.<google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect.IItem>|null} [items] ListSelect items
+                                 * @property {string|null} [subtitle] ListSelect subtitle
                                  */
     
                                 /**
@@ -43776,6 +43800,14 @@
                                  */
                                 ListSelect.prototype.items = $util.emptyArray;
     
+                                /**
+                                 * ListSelect subtitle.
+                                 * @member {string} subtitle
+                                 * @memberof google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect
+                                 * @instance
+                                 */
+                                ListSelect.prototype.subtitle = "";
+    
                                 /**
                                  * Creates a new ListSelect instance using the specified properties.
                                  * @function create
@@ -43805,6 +43837,8 @@
                                     if (message.items != null && message.items.length)
                                         for (var i = 0; i < message.items.length; ++i)
                                             $root.google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect.Item.encode(message.items[i], writer.uint32(/* id 2, wireType 2 =*/18).fork()).ldelim();
+                                    if (message.subtitle != null && message.hasOwnProperty("subtitle"))
+                                        writer.uint32(/* id 3, wireType 2 =*/26).string(message.subtitle);
                                     return writer;
                                 };
     
@@ -43847,6 +43881,9 @@
                                                 message.items = [];
                                             message.items.push($root.google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect.Item.decode(reader, reader.uint32()));
                                             break;
+                                        case 3:
+                                            message.subtitle = reader.string();
+                                            break;
                                         default:
                                             reader.skipType(tag & 7);
                                             break;
@@ -43894,6 +43931,9 @@
                                                 return "items." + error;
                                         }
                                     }
+                                    if (message.subtitle != null && message.hasOwnProperty("subtitle"))
+                                        if (!$util.isString(message.subtitle))
+                                            return "subtitle: string expected";
                                     return null;
                                 };
     
@@ -43921,6 +43961,8 @@
                                             message.items[i] = $root.google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect.Item.fromObject(object.items[i]);
                                         }
                                     }
+                                    if (object.subtitle != null)
+                                        message.subtitle = String(object.subtitle);
                                     return message;
                                 };
     
@@ -43939,8 +43981,10 @@
                                     var object = {};
                                     if (options.arrays || options.defaults)
                                         object.items = [];
-                                    if (options.defaults)
+                                    if (options.defaults) {
                                         object.title = "";
+                                        object.subtitle = "";
+                                    }
                                     if (message.title != null && message.hasOwnProperty("title"))
                                         object.title = message.title;
                                     if (message.items && message.items.length) {
@@ -43948,6 +43992,8 @@
                                         for (var j = 0; j < message.items.length; ++j)
                                             object.items[j] = $root.google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect.Item.toObject(message.items[j], options);
                                     }
+                                    if (message.subtitle != null && message.hasOwnProperty("subtitle"))
+                                        object.subtitle = message.subtitle;
                                     return object;
                                 };
     
@@ -55502,7 +55548,7 @@
                             if (message.displayName != null && message.hasOwnProperty("displayName"))
                                 writer.uint32(/* id 2, wireType 2 =*/18).string(message.displayName);
                             if (message.languageCode != null && message.hasOwnProperty("languageCode"))
-                                writer.uint32(/* id 3, wireType 2 =*/26).string(message.languageCode);
+                                writer.uint32(/* id 4, wireType 2 =*/34).string(message.languageCode);
                             return writer;
                         };
     
@@ -55543,7 +55589,7 @@
                                 case 2:
                                     message.displayName = reader.string();
                                     break;
-                                case 3:
+                                case 4:
                                     message.languageCode = reader.string();
                                     break;
                                 default:
diff --git a/packages/google-cloud-dialogflow/protos/protos.json b/packages/google-cloud-dialogflow/protos/protos.json
index 754e7fe7252..4dfd7c99884 100644
--- a/packages/google-cloud-dialogflow/protos/protos.json
+++ b/packages/google-cloud-dialogflow/protos/protos.json
@@ -1719,6 +1719,13 @@
                                   "options": {
                                     "(google.api.field_behavior)": "REQUIRED"
                                   }
+                                },
+                                "subtitle": {
+                                  "type": "string",
+                                  "id": 3,
+                                  "options": {
+                                    "(google.api.field_behavior)": "OPTIONAL"
+                                  }
                                 }
                               },
                               "nested": {
@@ -4498,6 +4505,13 @@
                                   "rule": "repeated",
                                   "type": "Item",
                                   "id": 2
+                                },
+                                "subtitle": {
+                                  "type": "string",
+                                  "id": 3,
+                                  "options": {
+                                    "(google.api.field_behavior)": "OPTIONAL"
+                                  }
                                 }
                               },
                               "nested": {
@@ -5443,7 +5457,7 @@
                         },
                         "languageCode": {
                           "type": "string",
-                          "id": 3
+                          "id": 4
                         }
                       }
                     },
diff --git a/packages/google-cloud-dialogflow/src/v2/doc/google/cloud/dialogflow/v2/doc_intent.js b/packages/google-cloud-dialogflow/src/v2/doc/google/cloud/dialogflow/v2/doc_intent.js
index 2f52f0931b4..0dbe455f49c 100644
--- a/packages/google-cloud-dialogflow/src/v2/doc/google/cloud/dialogflow/v2/doc_intent.js
+++ b/packages/google-cloud-dialogflow/src/v2/doc/google/cloud/dialogflow/v2/doc_intent.js
@@ -36,10 +36,13 @@
  *
  * @property {number} priority
  *   Optional. The priority of this intent. Higher numbers represent higher
- *   priorities. If this is zero or unspecified, we use the default
- *   priority 500000.
+ *   priorities.
  *
- *   Negative numbers mean that the intent is disabled.
+ *   - If the supplied value is unspecified or 0, the service
+ *     translates the value to 500,000, which corresponds to the
+ *     `Normal` priority in the console.
+ *   - If the supplied value is negative, the intent is ignored
+ *     in runtime detect intent requests.
  *
  * @property {boolean} isFallback
  *   Optional. Indicates whether this is a fallback intent.
@@ -613,6 +616,9 @@ const Intent = {
      *
      *   This object should have the same structure as [Item]{@link google.cloud.dialogflow.v2.Item}
      *
+     * @property {string} subtitle
+     *   Optional. Subtitle of the list.
+     *
      * @typedef ListSelect
      * @memberof google.cloud.dialogflow.v2
      * @see [google.cloud.dialogflow.v2.Intent.Message.ListSelect definition in proto format]{@link https://github.com/googleapis/googleapis/blob/master/google/cloud/dialogflow/v2/intent.proto}
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/doc/google/cloud/dialogflow/v2beta1/doc_intent.js b/packages/google-cloud-dialogflow/src/v2beta1/doc/google/cloud/dialogflow/v2beta1/doc_intent.js
index c4e892482be..d12cce6740f 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/doc/google/cloud/dialogflow/v2beta1/doc_intent.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/doc/google/cloud/dialogflow/v2beta1/doc_intent.js
@@ -35,11 +35,14 @@
  *   The number should be among the values of [WebhookState]{@link google.cloud.dialogflow.v2beta1.WebhookState}
  *
  * @property {number} priority
- *   Optional. The priority of this intent. Higher numbers represent higher
- *   priorities. If this is zero or unspecified, we use the default
- *   priority 500000.
+ *   The priority of this intent. Higher numbers represent higher
+ *   priorities.
  *
- *   Negative numbers mean that the intent is disabled.
+ *   - If the supplied value is unspecified or 0, the service
+ *     translates the value to 500,000, which corresponds to the
+ *     `Normal` priority in the console.
+ *   - If the supplied value is negative, the intent is ignored
+ *     in runtime detect intent requests.
  *
  * @property {boolean} isFallback
  *   Optional. Indicates whether this is a fallback intent.
@@ -679,6 +682,9 @@ const Intent = {
      *
      *   This object should have the same structure as [Item]{@link google.cloud.dialogflow.v2beta1.Item}
      *
+     * @property {string} subtitle
+     *   Optional. Subtitle of the list.
+     *
      * @typedef ListSelect
      * @memberof google.cloud.dialogflow.v2beta1
      * @see [google.cloud.dialogflow.v2beta1.Intent.Message.ListSelect definition in proto format]{@link https://github.com/googleapis/googleapis/blob/master/google/cloud/dialogflow/v2beta1/intent.proto}
diff --git a/packages/google-cloud-dialogflow/synth.metadata b/packages/google-cloud-dialogflow/synth.metadata
index 2dc104071f7..f3074e7576c 100644
--- a/packages/google-cloud-dialogflow/synth.metadata
+++ b/packages/google-cloud-dialogflow/synth.metadata
@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-10-25T11:14:42.506788Z",
+  "updateTime": "2019-11-05T12:13:05.802362Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.40.2",
-        "dockerImage": "googleapis/artman@sha256:3b8f7d9b4c206843ce08053474f5c64ae4d388ff7d995e68b59fb65edf73eeb9"
+        "version": "0.41.0",
+        "dockerImage": "googleapis/artman@sha256:75b38a3b073a7b243545f2332463096624c802bb1e56b8cb6f22ba1ecd325fa9"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "d0324cf604ecbf0503519ffbd8861efc6a0eb4f5",
-        "internalRef": "276503595"
+        "sha": "8c6569ced063c08a48272de2e887860d0c40d388",
+        "internalRef": "278552094"
       }
     },
     {