diff --git a/google-cloud-clients/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksClient.java b/google-cloud-clients/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksClient.java
index 1741272844e7..81c44d7cd0dc 100644
--- a/google-cloud-clients/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksClient.java
+++ b/google-cloud-clients/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksClient.java
@@ -27,6 +27,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.tasks.v2beta2.stub.CloudTasksStub;
 import com.google.cloud.tasks.v2beta2.stub.CloudTasksStubSettings;
+import com.google.common.util.concurrent.MoreExecutors;
 import com.google.iam.v1.GetIamPolicyRequest;
 import com.google.iam.v1.Policy;
 import com.google.iam.v1.SetIamPolicyRequest;
@@ -2850,7 +2851,8 @@ public static ApiFuture<ListQueuesPagedResponse> createAsync(
             public ListQueuesPagedResponse apply(ListQueuesPage input) {
               return new ListQueuesPagedResponse(input);
             }
-          });
+          },
+          MoreExecutors.directExecutor());
     }
 
     private ListQueuesPagedResponse(ListQueuesPage page) {
@@ -2925,7 +2927,8 @@ public static ApiFuture<ListTasksPagedResponse> createAsync(
             public ListTasksPagedResponse apply(ListTasksPage input) {
               return new ListTasksPagedResponse(input);
             }
-          });
+          },
+          MoreExecutors.directExecutor());
     }
 
     private ListTasksPagedResponse(ListTasksPage page) {
diff --git a/google-cloud-clients/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksClient.java b/google-cloud-clients/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksClient.java
index 3ee194cbbba5..6d6b6104d3c7 100644
--- a/google-cloud-clients/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksClient.java
+++ b/google-cloud-clients/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/CloudTasksClient.java
@@ -27,6 +27,7 @@
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.tasks.v2beta3.stub.CloudTasksStub;
 import com.google.cloud.tasks.v2beta3.stub.CloudTasksStubSettings;
+import com.google.common.util.concurrent.MoreExecutors;
 import com.google.iam.v1.GetIamPolicyRequest;
 import com.google.iam.v1.Policy;
 import com.google.iam.v1.SetIamPolicyRequest;
@@ -2296,7 +2297,8 @@ public static ApiFuture<ListQueuesPagedResponse> createAsync(
             public ListQueuesPagedResponse apply(ListQueuesPage input) {
               return new ListQueuesPagedResponse(input);
             }
-          });
+          },
+          MoreExecutors.directExecutor());
     }
 
     private ListQueuesPagedResponse(ListQueuesPage page) {
@@ -2371,7 +2373,8 @@ public static ApiFuture<ListTasksPagedResponse> createAsync(
             public ListTasksPagedResponse apply(ListTasksPage input) {
               return new ListTasksPagedResponse(input);
             }
-          });
+          },
+          MoreExecutors.directExecutor());
     }
 
     private ListTasksPagedResponse(ListTasksPage page) {
diff --git a/google-cloud-clients/google-cloud-tasks/synth.metadata b/google-cloud-clients/google-cloud-tasks/synth.metadata
index f54aef13d8cd..bcb6b2cec97c 100644
--- a/google-cloud-clients/google-cloud-tasks/synth.metadata
+++ b/google-cloud-clients/google-cloud-tasks/synth.metadata
@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-03-01T08:54:09.252645Z",
+  "updateTime": "2019-03-06T08:53:41.978611Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.16.14",
-        "dockerImage": "googleapis/artman@sha256:f3d61ae45abaeefb6be5f228cda22732c2f1b00fb687c79c4bd4f2c42bb1e1a7"
+        "version": "0.16.15",
+        "dockerImage": "googleapis/artman@sha256:9caadfa59d48224cba5f3217eb9d61a155b78ccf31e628abef385bc5b7ed3bd2"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "41d72d444fbe445f4da89e13be02078734fb7875",
-        "internalRef": "236230004"
+        "sha": "856117505ff9075b3e9c0b5674113667b6cf9e00",
+        "internalRef": "236931378"
       }
     }
   ],