diff --git a/clients/google-api-services-dataflow/v1b3/2.0.0/README.md b/clients/google-api-services-dataflow/v1b3/2.0.0/README.md
index aab45a99c63..5d147f75d12 100644
--- a/clients/google-api-services-dataflow/v1b3/2.0.0/README.md
+++ b/clients/google-api-services-dataflow/v1b3/2.0.0/README.md
@@ -22,7 +22,7 @@ Add the following lines to your `pom.xml` file:
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-dataflow</artifactId>
-      <version>v1b3-rev20260118-2.0.0</version>
+      <version>v1b3-rev20260127-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-dataflow:v1b3-rev20260118-2.0.0'
+  implementation 'com.google.apis:google-api-services-dataflow:v1b3-rev20260127-2.0.0'
 }
 ```
 
diff --git a/clients/google-api-services-dataflow/v1b3/2.0.0/com/google/api/services/dataflow/model/GetWorkerStacktracesRequest.java b/clients/google-api-services-dataflow/v1b3/2.0.0/com/google/api/services/dataflow/model/GetWorkerStacktracesRequest.java
index 8ea1ff0352d..b1c13fc1b33 100644
--- a/clients/google-api-services-dataflow/v1b3/2.0.0/com/google/api/services/dataflow/model/GetWorkerStacktracesRequest.java
+++ b/clients/google-api-services-dataflow/v1b3/2.0.0/com/google/api/services/dataflow/model/GetWorkerStacktracesRequest.java
@@ -29,6 +29,14 @@
 @SuppressWarnings("javadoc")
 public final class GetWorkerStacktracesRequest extends com.google.api.client.json.GenericJson {
 
+  /**
+   * The end time for the stacktrace query. The returned stacktraces will be a recent stack trace at
+   * or shortly before this time.
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private String endTime;
+
   /**
    * The worker for which to get stacktraces. The returned stacktraces will be for the SDK harness
    * running on this worker.
@@ -37,6 +45,25 @@ public final class GetWorkerStacktracesRequest extends com.google.api.client.jso
   @com.google.api.client.util.Key
   private java.lang.String workerId;
 
+  /**
+   * The end time for the stacktrace query. The returned stacktraces will be a recent stack trace at
+   * or shortly before this time.
+   * @return value or {@code null} for none
+   */
+  public String getEndTime() {
+    return endTime;
+  }
+
+  /**
+   * The end time for the stacktrace query. The returned stacktraces will be a recent stack trace at
+   * or shortly before this time.
+   * @param endTime endTime or {@code null} for none
+   */
+  public GetWorkerStacktracesRequest setEndTime(String endTime) {
+    this.endTime = endTime;
+    return this;
+  }
+
   /**
    * The worker for which to get stacktraces. The returned stacktraces will be for the SDK harness
    * running on this worker.
diff --git a/clients/google-api-services-dataflow/v1b3/2.0.0/pom.xml b/clients/google-api-services-dataflow/v1b3/2.0.0/pom.xml
index e8d0b130596..471b8631b50 100644
--- a/clients/google-api-services-dataflow/v1b3/2.0.0/pom.xml
+++ b/clients/google-api-services-dataflow/v1b3/2.0.0/pom.xml
@@ -8,8 +8,8 @@
 
   <groupId>com.google.apis</groupId>
   <artifactId>google-api-services-dataflow</artifactId>
-  <version>v1b3-rev20260118-2.0.0</version>
-  <name>Dataflow API v1b3-rev20260118-2.0.0</name>
+  <version>v1b3-rev20260127-2.0.0</version>
+  <name>Dataflow API v1b3-rev20260127-2.0.0</name>
   <packaging>jar</packaging>
 
   <inceptionYear>2011</inceptionYear>
diff --git a/clients/google-api-services-dataflow/v1b3/README.md b/clients/google-api-services-dataflow/v1b3/README.md
index aab45a99c63..5d147f75d12 100644
--- a/clients/google-api-services-dataflow/v1b3/README.md
+++ b/clients/google-api-services-dataflow/v1b3/README.md
@@ -22,7 +22,7 @@ Add the following lines to your `pom.xml` file:
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-dataflow</artifactId>
-      <version>v1b3-rev20260118-2.0.0</version>
+      <version>v1b3-rev20260127-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-dataflow:v1b3-rev20260118-2.0.0'
+  implementation 'com.google.apis:google-api-services-dataflow:v1b3-rev20260127-2.0.0'
 }
 ```