diff --git a/packages/google-cloud-orchestration-airflow-service/protos/protos.d.ts b/packages/google-cloud-orchestration-airflow-service/protos/protos.d.ts
index bd1c4601805..bce1baa7a99 100644
--- a/packages/google-cloud-orchestration-airflow-service/protos/protos.d.ts
+++ b/packages/google-cloud-orchestration-airflow-service/protos/protos.d.ts
@@ -6542,8 +6542,7 @@ export namespace google {
             OUTPUT_ONLY = 3,
             INPUT_ONLY = 4,
             IMMUTABLE = 5,
-            UNORDERED_LIST = 6,
-            NON_EMPTY_DEFAULT = 7
+            UNORDERED_LIST = 6
         }
 
         /** Properties of a ResourceDescriptor. */
diff --git a/packages/google-cloud-orchestration-airflow-service/protos/protos.js b/packages/google-cloud-orchestration-airflow-service/protos/protos.js
index 7dd44193e31..3da0b77bdb7 100644
--- a/packages/google-cloud-orchestration-airflow-service/protos/protos.js
+++ b/packages/google-cloud-orchestration-airflow-service/protos/protos.js
@@ -16060,7 +16060,6 @@
              * @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);
@@ -16071,7 +16070,6 @@
                 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;
             })();
     
@@ -22240,7 +22238,6 @@
                             case 4:
                             case 5:
                             case 6:
-                            case 7:
                                 break;
                             }
                     }
@@ -22345,10 +22342,6 @@
                             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-orchestration-airflow-service/protos/protos.json b/packages/google-cloud-orchestration-airflow-service/protos/protos.json
index aacddc38005..ee126899f6e 100644
--- a/packages/google-cloud-orchestration-airflow-service/protos/protos.json
+++ b/packages/google-cloud-orchestration-airflow-service/protos/protos.json
@@ -1953,8 +1953,7 @@
                 "OUTPUT_ONLY": 3,
                 "INPUT_ONLY": 4,
                 "IMMUTABLE": 5,
-                "UNORDERED_LIST": 6,
-                "NON_EMPTY_DEFAULT": 7
+                "UNORDERED_LIST": 6
               }
             },
             "resourceReference": {
@@ -2597,18 +2596,6 @@
                 ]
               ],
               "reserved": [
-                [
-                  4,
-                  4
-                ],
-                [
-                  5,
-                  5
-                ],
-                [
-                  6,
-                  6
-                ],
                 [
                   8,
                   8