diff --git a/packages/google-cloud-dialogflow/protos/protos.d.ts b/packages/google-cloud-dialogflow/protos/protos.d.ts
index 8abec25d73a..d059c423d04 100644
--- a/packages/google-cloud-dialogflow/protos/protos.d.ts
+++ b/packages/google-cloud-dialogflow/protos/protos.d.ts
@@ -53968,7 +53968,8 @@ export namespace google {
             OUTPUT_ONLY = 3,
             INPUT_ONLY = 4,
             IMMUTABLE = 5,
-            UNORDERED_LIST = 6
+            UNORDERED_LIST = 6,
+            NON_EMPTY_DEFAULT = 7
         }
 
         /** Properties of a ResourceDescriptor. */
diff --git a/packages/google-cloud-dialogflow/protos/protos.js b/packages/google-cloud-dialogflow/protos/protos.js
index 8606600ed96..c6bc0999dd8 100644
--- a/packages/google-cloud-dialogflow/protos/protos.js
+++ b/packages/google-cloud-dialogflow/protos/protos.js
@@ -128942,6 +128942,7 @@
              * @property {number} INPUT_ONLY=4 INPUT_ONLY value
              * @property {number} IMMUTABLE=5 IMMUTABLE value
              * @property {number} UNORDERED_LIST=6 UNORDERED_LIST value
+             * @property {number} NON_EMPTY_DEFAULT=7 NON_EMPTY_DEFAULT value
              */
             api.FieldBehavior = (function() {
                 var valuesById = {}, values = Object.create(valuesById);
@@ -128952,6 +128953,7 @@
                 values[valuesById[4] = "INPUT_ONLY"] = 4;
                 values[valuesById[5] = "IMMUTABLE"] = 5;
                 values[valuesById[6] = "UNORDERED_LIST"] = 6;
+                values[valuesById[7] = "NON_EMPTY_DEFAULT"] = 7;
                 return values;
             })();
     
@@ -135120,6 +135122,7 @@
                             case 4:
                             case 5:
                             case 6:
+                            case 7:
                                 break;
                             }
                     }
@@ -135224,6 +135227,10 @@
                             case 6:
                                 message[".google.api.fieldBehavior"][i] = 6;
                                 break;
+                            case "NON_EMPTY_DEFAULT":
+                            case 7:
+                                message[".google.api.fieldBehavior"][i] = 7;
+                                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 f96719cc93c..251018a3a2b 100644
--- a/packages/google-cloud-dialogflow/protos/protos.json
+++ b/packages/google-cloud-dialogflow/protos/protos.json
@@ -16302,7 +16302,8 @@
                 "OUTPUT_ONLY": 3,
                 "INPUT_ONLY": 4,
                 "IMMUTABLE": 5,
-                "UNORDERED_LIST": 6
+                "UNORDERED_LIST": 6,
+                "NON_EMPTY_DEFAULT": 7
               }
             },
             "resourceReference": {
@@ -16945,6 +16946,18 @@
                 ]
               ],
               "reserved": [
+                [
+                  4,
+                  4
+                ],
+                [
+                  5,
+                  5
+                ],
+                [
+                  6,
+                  6
+                ],
                 [
                   8,
                   8