diff --git a/protos/protos.d.ts b/protos/protos.d.ts
index 53b30b43d..2bc15192a 100644
--- a/protos/protos.d.ts
+++ b/protos/protos.d.ts
@@ -4891,7 +4891,7 @@ export namespace google {
                 public time?: (google.protobuf.ITimestamp|null);
 
                 /** SeekRequest snapshot. */
-                public snapshot?: (string|null);
+                public snapshot: string;
 
                 /** SeekRequest target. */
                 public target?: ("time"|"snapshot");
@@ -6024,7 +6024,7 @@ export namespace google {
                 public parent: string;
 
                 /** ValidateMessageRequest name. */
-                public name?: (string|null);
+                public name: string;
 
                 /** ValidateMessageRequest schema. */
                 public schema?: (google.pubsub.v1.ISchema|null);
@@ -6348,19 +6348,19 @@ export namespace google {
             public selector: string;
 
             /** HttpRule get. */
-            public get?: (string|null);
+            public get: string;
 
             /** HttpRule put. */
-            public put?: (string|null);
+            public put: string;
 
             /** HttpRule post. */
-            public post?: (string|null);
+            public post: string;
 
             /** HttpRule delete. */
-            public delete?: (string|null);
+            public delete: string;
 
             /** HttpRule patch. */
-            public patch?: (string|null);
+            public patch: string;
 
             /** HttpRule custom. */
             public custom?: (google.api.ICustomHttpPattern|null);
diff --git a/protos/protos.js b/protos/protos.js
index 9290302f9..2d3c27e71 100644
--- a/protos/protos.js
+++ b/protos/protos.js
@@ -11168,11 +11168,11 @@
     
                     /**
                      * SeekRequest snapshot.
-                     * @member {string|null|undefined} snapshot
+                     * @member {string} snapshot
                      * @memberof google.pubsub.v1.SeekRequest
                      * @instance
                      */
-                    SeekRequest.prototype.snapshot = null;
+                    SeekRequest.prototype.snapshot = "";
     
                     // OneOf field names bound to virtual getters and setters
                     var $oneOfFields;
@@ -13629,11 +13629,11 @@
     
                     /**
                      * ValidateMessageRequest name.
-                     * @member {string|null|undefined} name
+                     * @member {string} name
                      * @memberof google.pubsub.v1.ValidateMessageRequest
                      * @instance
                      */
-                    ValidateMessageRequest.prototype.name = null;
+                    ValidateMessageRequest.prototype.name = "";
     
                     /**
                      * ValidateMessageRequest schema.
@@ -14391,43 +14391,43 @@
     
                 /**
                  * HttpRule get.
-                 * @member {string|null|undefined} get
+                 * @member {string} get
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype.get = null;
+                HttpRule.prototype.get = "";
     
                 /**
                  * HttpRule put.
-                 * @member {string|null|undefined} put
+                 * @member {string} put
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype.put = null;
+                HttpRule.prototype.put = "";
     
                 /**
                  * HttpRule post.
-                 * @member {string|null|undefined} post
+                 * @member {string} post
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype.post = null;
+                HttpRule.prototype.post = "";
     
                 /**
                  * HttpRule delete.
-                 * @member {string|null|undefined} delete
+                 * @member {string} delete
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype["delete"] = null;
+                HttpRule.prototype["delete"] = "";
     
                 /**
                  * HttpRule patch.
-                 * @member {string|null|undefined} patch
+                 * @member {string} patch
                  * @memberof google.api.HttpRule
                  * @instance
                  */
-                HttpRule.prototype.patch = null;
+                HttpRule.prototype.patch = "";
     
                 /**
                  * HttpRule custom.