diff --git a/package.json b/package.json
index 0b9ba954a..56889274d 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   "scripts": {
     "docs": "jsdoc -c .jsdoc.js",
     "predocs": "npm run compile",
-    "lint": "gts check",
+    "lint": "gts fix",
     "samples-test": "cd samples/ && npm link ../ && npm test && cd ../",
     "system-test": "mocha build/system-test --timeout 600000",
     "cleanup": "mocha scripts/cleanup.js --timeout 30000",
@@ -45,7 +45,7 @@
     "docs-test": "linkinator docs",
     "predocs-test": "npm run docs",
     "benchwrapper": "node bin/benchwrapper.js",
-    "prelint": "cd samples; npm link ../; npm i"
+    "prelint": "cd samples; npm link ../; npm install"
   },
   "dependencies": {
     "@google-cloud/common": "^2.2.2",
@@ -59,7 +59,7 @@
     "events-intercept": "^2.0.0",
     "extend": "^3.0.2",
     "google-auth-library": "^6.0.0",
-    "google-gax": "^2.0.2",
+    "google-gax": "^2.1.0",
     "grpc": "^1.21.1",
     "grpc-gcp": "^0.1.1",
     "is": "^3.2.1",
@@ -94,7 +94,7 @@
     "dedent": "^0.7.0",
     "duplexify": "^4.1.1",
     "execa": "^4.0.0",
-    "gts": "2.0.0",
+    "gts": "^2.0.0",
     "jsdoc": "^3.6.2",
     "jsdoc-fresh": "^1.0.1",
     "jsdoc-region-tag": "^1.0.2",
diff --git a/protos/protos.json b/protos/protos.json
index 46b0be198..bb42eb948 100644
--- a/protos/protos.json
+++ b/protos/protos.json
@@ -1012,7 +1012,8 @@
             "java_multiple_files": true,
             "java_outer_classname": "StatusProto",
             "java_package": "com.google.rpc",
-            "objc_class_prefix": "RPC"
+            "objc_class_prefix": "RPC",
+            "cc_enable_arenas": true
           },
           "nested": {
             "RetryInfo": {
@@ -3686,26 +3687,32 @@
               "extend": "google.protobuf.MethodOptions"
             },
             "Operations": {
+              "options": {
+                "(google.api.default_host)": "longrunning.googleapis.com"
+              },
               "methods": {
                 "ListOperations": {
                   "requestType": "ListOperationsRequest",
                   "responseType": "ListOperationsResponse",
                   "options": {
-                    "(google.api.http).get": "/v1/{name=operations}"
+                    "(google.api.http).get": "/v1/{name=operations}",
+                    "(google.api.method_signature)": "name,filter"
                   }
                 },
                 "GetOperation": {
                   "requestType": "GetOperationRequest",
                   "responseType": "Operation",
                   "options": {
-                    "(google.api.http).get": "/v1/{name=operations/**}"
+                    "(google.api.http).get": "/v1/{name=operations/**}",
+                    "(google.api.method_signature)": "name"
                   }
                 },
                 "DeleteOperation": {
                   "requestType": "DeleteOperationRequest",
                   "responseType": "google.protobuf.Empty",
                   "options": {
-                    "(google.api.http).delete": "/v1/{name=operations/**}"
+                    "(google.api.http).delete": "/v1/{name=operations/**}",
+                    "(google.api.method_signature)": "name"
                   }
                 },
                 "CancelOperation": {
@@ -3713,7 +3720,8 @@
                   "responseType": "google.protobuf.Empty",
                   "options": {
                     "(google.api.http).post": "/v1/{name=operations/**}:cancel",
-                    "(google.api.http).body": "*"
+                    "(google.api.http).body": "*",
+                    "(google.api.method_signature)": "name"
                   }
                 },
                 "WaitOperation": {
diff --git a/synth.metadata b/synth.metadata
index b292ca006..25537f351 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -1,20 +1,12 @@
 {
-  "updateTime": "2020-04-09T21:34:30.852151Z",
+  "updateTime": "2020-04-11T00:56:45.691191Z",
   "sources": [
-    {
-      "git": {
-        "name": "googleapis",
-        "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "ac1f904979899bc598fb0567cf7a367f08b40b43",
-        "internalRef": "305760190",
-        "log": "ac1f904979899bc598fb0567cf7a367f08b40b43\nfix (breaking change): reorder Company and Job resources in talent API to be consistent with old gapic config.\n\ncommitter: @hzyi-google\nPiperOrigin-RevId: 305760190\n\n"
-      }
-    },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "74ce986d3b5431eb66985e9a00c4eb45295a4020"
+        "sha": "6f32150677c9784f3c3a7e1949472bd29c9d72c5",
+        "log": "6f32150677c9784f3c3a7e1949472bd29c9d72c5\nfix: installs test_utils from its common repo (#480)\n\n\n"
       }
     }
   ],
diff --git a/synth.py b/synth.py
index 9d4831ebf..f98b39f42 100644
--- a/synth.py
+++ b/synth.py
@@ -54,5 +54,5 @@
 # Node.js specific cleanup
 # '''
 subprocess.run(['npm', 'install'])
-subprocess.run(['npm', 'run', 'fix'])
+subprocess.run(['npm', 'run', 'lint'])
 subprocess.run(['npx', 'compileProtos', 'src'])