diff --git a/packages/google-cloud-securitycenter/protos/protos.d.ts b/packages/google-cloud-securitycenter/protos/protos.d.ts
index 2216b95dee9..a188014ea6c 100644
--- a/packages/google-cloud-securitycenter/protos/protos.d.ts
+++ b/packages/google-cloud-securitycenter/protos/protos.d.ts
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 import * as Long from "long";
-import * as $protobuf from "protobufjs";
+import {protobuf as $protobuf} from "google-gax";
 /** Namespace google. */
 export namespace google {
 
diff --git a/packages/google-cloud-securitycenter/protos/protos.js b/packages/google-cloud-securitycenter/protos/protos.js
index a40182feb79..f8987b55099 100644
--- a/packages/google-cloud-securitycenter/protos/protos.js
+++ b/packages/google-cloud-securitycenter/protos/protos.js
@@ -19,7 +19,7 @@
         define(["protobufjs/minimal"], factory);
 
     /* CommonJS */ else if (typeof require === 'function' && typeof module === 'object' && module && module.exports)
-        module.exports = factory(require("protobufjs/minimal"));
+        module.exports = factory(require("google-gax").protobufMinimal);
 
 })(this, function($protobuf) {
     "use strict";
diff --git a/packages/google-cloud-securitycenter/synth.metadata b/packages/google-cloud-securitycenter/synth.metadata
index 6d380b3ec4b..dc9a50b2ad4 100644
--- a/packages/google-cloud-securitycenter/synth.metadata
+++ b/packages/google-cloud-securitycenter/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-security-center.git",
-        "sha": "cc0475d08356219dd4b40112bb297f9b683dec5b"
+        "sha": "f68400c4490a6887bb8578184b4737a678da47d7"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "3a00b7fea8c4c83eaff8eb207f530a2e3e8e1de3"
+        "sha": "89d431fb2975fc4e0ed24995a6e6dfc8ff4c24fa"
       }
     }
   ],