diff --git a/packages/google-cloud-dialogflow-cx/protos/google/cloud/dialogflow/cx/v3/test_case.proto b/packages/google-cloud-dialogflow-cx/protos/google/cloud/dialogflow/cx/v3/test_case.proto
index f7b942221bd..94e69aaed03 100644
--- a/packages/google-cloud-dialogflow-cx/protos/google/cloud/dialogflow/cx/v3/test_case.proto
+++ b/packages/google-cloud-dialogflow-cx/protos/google/cloud/dialogflow/cx/v3/test_case.proto
@@ -266,6 +266,9 @@ message ConversationTurn {
     // utterance. Often if parameters are injected, webhooks should not be
     // enabled.
     bool is_webhook_enabled = 3;
+
+    // Whether sentiment analysis is enabled.
+    bool enable_sentiment_analysis = 7;
   }
 
   // The output from the virtual agent.
diff --git a/packages/google-cloud-dialogflow-cx/protos/protos.d.ts b/packages/google-cloud-dialogflow-cx/protos/protos.d.ts
index 34a118d3783..f189daf7a51 100644
--- a/packages/google-cloud-dialogflow-cx/protos/protos.d.ts
+++ b/packages/google-cloud-dialogflow-cx/protos/protos.d.ts
@@ -11573,6 +11573,9 @@ export namespace google {
 
                             /** UserInput isWebhookEnabled */
                             isWebhookEnabled?: (boolean|null);
+
+                            /** UserInput enableSentimentAnalysis */
+                            enableSentimentAnalysis?: (boolean|null);
                         }
 
                         /** Represents a UserInput. */
@@ -11593,6 +11596,9 @@ export namespace google {
                             /** UserInput isWebhookEnabled. */
                             public isWebhookEnabled: boolean;
 
+                            /** UserInput enableSentimentAnalysis. */
+                            public enableSentimentAnalysis: boolean;
+
                             /**
                              * Creates a new UserInput instance using the specified properties.
                              * @param [properties] Properties to set
diff --git a/packages/google-cloud-dialogflow-cx/protos/protos.js b/packages/google-cloud-dialogflow-cx/protos/protos.js
index 73dea47b147..55eef9a8774 100644
--- a/packages/google-cloud-dialogflow-cx/protos/protos.js
+++ b/packages/google-cloud-dialogflow-cx/protos/protos.js
@@ -26881,6 +26881,7 @@
                                  * @property {google.cloud.dialogflow.cx.v3.IQueryInput|null} [input] UserInput input
                                  * @property {google.protobuf.IStruct|null} [injectedParameters] UserInput injectedParameters
                                  * @property {boolean|null} [isWebhookEnabled] UserInput isWebhookEnabled
+                                 * @property {boolean|null} [enableSentimentAnalysis] UserInput enableSentimentAnalysis
                                  */
     
                                 /**
@@ -26922,6 +26923,14 @@
                                  */
                                 UserInput.prototype.isWebhookEnabled = false;
     
+                                /**
+                                 * UserInput enableSentimentAnalysis.
+                                 * @member {boolean} enableSentimentAnalysis
+                                 * @memberof google.cloud.dialogflow.cx.v3.ConversationTurn.UserInput
+                                 * @instance
+                                 */
+                                UserInput.prototype.enableSentimentAnalysis = false;
+    
                                 /**
                                  * Creates a new UserInput instance using the specified properties.
                                  * @function create
@@ -26952,6 +26961,8 @@
                                         writer.uint32(/* id 3, wireType 0 =*/24).bool(message.isWebhookEnabled);
                                     if (message.input != null && Object.hasOwnProperty.call(message, "input"))
                                         $root.google.cloud.dialogflow.cx.v3.QueryInput.encode(message.input, writer.uint32(/* id 5, wireType 2 =*/42).fork()).ldelim();
+                                    if (message.enableSentimentAnalysis != null && Object.hasOwnProperty.call(message, "enableSentimentAnalysis"))
+                                        writer.uint32(/* id 7, wireType 0 =*/56).bool(message.enableSentimentAnalysis);
                                     return writer;
                                 };
     
@@ -26995,6 +27006,9 @@
                                         case 3:
                                             message.isWebhookEnabled = reader.bool();
                                             break;
+                                        case 7:
+                                            message.enableSentimentAnalysis = reader.bool();
+                                            break;
                                         default:
                                             reader.skipType(tag & 7);
                                             break;
@@ -27043,6 +27057,9 @@
                                     if (message.isWebhookEnabled != null && message.hasOwnProperty("isWebhookEnabled"))
                                         if (typeof message.isWebhookEnabled !== "boolean")
                                             return "isWebhookEnabled: boolean expected";
+                                    if (message.enableSentimentAnalysis != null && message.hasOwnProperty("enableSentimentAnalysis"))
+                                        if (typeof message.enableSentimentAnalysis !== "boolean")
+                                            return "enableSentimentAnalysis: boolean expected";
                                     return null;
                                 };
     
@@ -27070,6 +27087,8 @@
                                     }
                                     if (object.isWebhookEnabled != null)
                                         message.isWebhookEnabled = Boolean(object.isWebhookEnabled);
+                                    if (object.enableSentimentAnalysis != null)
+                                        message.enableSentimentAnalysis = Boolean(object.enableSentimentAnalysis);
                                     return message;
                                 };
     
@@ -27090,6 +27109,7 @@
                                         object.injectedParameters = null;
                                         object.isWebhookEnabled = false;
                                         object.input = null;
+                                        object.enableSentimentAnalysis = false;
                                     }
                                     if (message.injectedParameters != null && message.hasOwnProperty("injectedParameters"))
                                         object.injectedParameters = $root.google.protobuf.Struct.toObject(message.injectedParameters, options);
@@ -27097,6 +27117,8 @@
                                         object.isWebhookEnabled = message.isWebhookEnabled;
                                     if (message.input != null && message.hasOwnProperty("input"))
                                         object.input = $root.google.cloud.dialogflow.cx.v3.QueryInput.toObject(message.input, options);
+                                    if (message.enableSentimentAnalysis != null && message.hasOwnProperty("enableSentimentAnalysis"))
+                                        object.enableSentimentAnalysis = message.enableSentimentAnalysis;
                                     return object;
                                 };
     
diff --git a/packages/google-cloud-dialogflow-cx/protos/protos.json b/packages/google-cloud-dialogflow-cx/protos/protos.json
index f83697a0a17..c4f067596fe 100644
--- a/packages/google-cloud-dialogflow-cx/protos/protos.json
+++ b/packages/google-cloud-dialogflow-cx/protos/protos.json
@@ -3389,6 +3389,10 @@
                                 "isWebhookEnabled": {
                                   "type": "bool",
                                   "id": 3
+                                },
+                                "enableSentimentAnalysis": {
+                                  "type": "bool",
+                                  "id": 7
                                 }
                               }
                             },