diff --git a/api-index-v1.json b/api-index-v1.json
index c678f58338..815b2a3f34 100644
--- a/api-index-v1.json
+++ b/api-index-v1.json
@@ -24312,37 +24312,37 @@
       "options": {
         "cc_enable_arenas": {
           "valueCounts": {
-            "true": 20
+            "true": 21
           }
         },
         "csharp_namespace": {
           "valueCounts": {
-            "Google.Cloud.Dialogflow.Cx.V3Beta1": 20
+            "Google.Cloud.Dialogflow.Cx.V3Beta1": 21
           }
         },
         "go_package": {
           "valueCounts": {
-            "google.golang.org/genproto/googleapis/cloud/dialogflow/cx/v3beta1;cx": 20
+            "google.golang.org/genproto/googleapis/cloud/dialogflow/cx/v3beta1;cx": 21
           }
         },
         "java_multiple_files": {
           "valueCounts": {
-            "true": 20
+            "true": 21
           }
         },
         "java_package": {
           "valueCounts": {
-            "com.google.cloud.dialogflow.cx.v3beta1": 20
+            "com.google.cloud.dialogflow.cx.v3beta1": 21
           }
         },
         "objc_class_prefix": {
           "valueCounts": {
-            "DF": 20
+            "DF": 21
           }
         },
         "ruby_package": {
           "valueCounts": {
-            "Google::Cloud::Dialogflow::CX::V3beta1": 20
+            "Google::Cloud::Dialogflow::CX::V3beta1": 21
           }
         }
       },
@@ -24452,6 +24452,34 @@
             }
           ]
         },
+        {
+          "shortName": "Changelogs",
+          "fullName": "google.cloud.dialogflow.cx.v3beta1.Changelogs",
+          "methods": [
+            {
+              "shortName": "GetChangelog",
+              "fullName": "google.cloud.dialogflow.cx.v3beta1.Changelogs.GetChangelog",
+              "mode": "UNARY",
+              "bindings": [
+                {
+                  "httpMethod": "GET",
+                  "path": "/v3beta1/{name=projects/*/locations/*/agents/*/changelogs/*}"
+                }
+              ]
+            },
+            {
+              "shortName": "ListChangelogs",
+              "fullName": "google.cloud.dialogflow.cx.v3beta1.Changelogs.ListChangelogs",
+              "mode": "UNARY",
+              "bindings": [
+                {
+                  "httpMethod": "GET",
+                  "path": "/v3beta1/{parent=projects/*/locations/*/agents/*}/changelogs"
+                }
+              ]
+            }
+          ]
+        },
         {
           "shortName": "Deployments",
           "fullName": "google.cloud.dialogflow.cx.v3beta1.Deployments",