diff --git a/packages/google-cloud-dialogflow/protos/protos.d.ts b/packages/google-cloud-dialogflow/protos/protos.d.ts
index f226a04a66f..84572cb0f50 100644
--- a/packages/google-cloud-dialogflow/protos/protos.d.ts
+++ b/packages/google-cloud-dialogflow/protos/protos.d.ts
@@ -30183,7 +30183,8 @@ export namespace google {
             REQUIRED = 2,
             OUTPUT_ONLY = 3,
             INPUT_ONLY = 4,
-            IMMUTABLE = 5
+            IMMUTABLE = 5,
+            UNORDERED_LIST = 6
         }
 
         /** Properties of a ResourceDescriptor. */
diff --git a/packages/google-cloud-dialogflow/protos/protos.js b/packages/google-cloud-dialogflow/protos/protos.js
index b7bef046be0..0b57ec06258 100644
--- a/packages/google-cloud-dialogflow/protos/protos.js
+++ b/packages/google-cloud-dialogflow/protos/protos.js
@@ -73057,6 +73057,7 @@
              * @property {number} OUTPUT_ONLY=3 OUTPUT_ONLY value
              * @property {number} INPUT_ONLY=4 INPUT_ONLY value
              * @property {number} IMMUTABLE=5 IMMUTABLE value
+             * @property {number} UNORDERED_LIST=6 UNORDERED_LIST value
              */
             api.FieldBehavior = (function() {
                 var valuesById = {}, values = Object.create(valuesById);
@@ -73066,6 +73067,7 @@
                 values[valuesById[3] = "OUTPUT_ONLY"] = 3;
                 values[valuesById[4] = "INPUT_ONLY"] = 4;
                 values[valuesById[5] = "IMMUTABLE"] = 5;
+                values[valuesById[6] = "UNORDERED_LIST"] = 6;
                 return values;
             })();
     
@@ -79233,6 +79235,7 @@
                             case 3:
                             case 4:
                             case 5:
+                            case 6:
                                 break;
                             }
                     }
@@ -79333,6 +79336,10 @@
                             case 5:
                                 message[".google.api.fieldBehavior"][i] = 5;
                                 break;
+                            case "UNORDERED_LIST":
+                            case 6:
+                                message[".google.api.fieldBehavior"][i] = 6;
+                                break;
                             }
                     }
                     if (object[".google.api.resourceReference"] != null) {
diff --git a/packages/google-cloud-dialogflow/protos/protos.json b/packages/google-cloud-dialogflow/protos/protos.json
index 910672cc285..c387d041b52 100644
--- a/packages/google-cloud-dialogflow/protos/protos.json
+++ b/packages/google-cloud-dialogflow/protos/protos.json
@@ -9166,7 +9166,8 @@
                 "REQUIRED": 2,
                 "OUTPUT_ONLY": 3,
                 "INPUT_ONLY": 4,
-                "IMMUTABLE": 5
+                "IMMUTABLE": 5,
+                "UNORDERED_LIST": 6
               }
             },
             "resourceReference": {
diff --git a/packages/google-cloud-dialogflow/synth.metadata b/packages/google-cloud-dialogflow/synth.metadata
index 35a8cf4dd6c..c32ca4eadaa 100644
--- a/packages/google-cloud-dialogflow/synth.metadata
+++ b/packages/google-cloud-dialogflow/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-dialogflow.git",
-        "sha": "09c96f2c5c7bd3a5e1b695a19f1059bf12a98d83"
+        "sha": "0a8ed269f58d869c09e8883407d90072d8df6e2b"
       }
     },
     {