diff --git a/runners/google-cloud-dataflow-java/worker/src/test/java/org/apache/beam/runners/dataflow/worker/StreamingDataflowWorkerTest.java b/runners/google-cloud-dataflow-java/worker/src/test/java/org/apache/beam/runners/dataflow/worker/StreamingDataflowWorkerTest.java
index 12b7df2..17b59ec 100644
--- a/runners/google-cloud-dataflow-java/worker/src/test/java/org/apache/beam/runners/dataflow/worker/StreamingDataflowWorkerTest.java
+++ b/runners/google-cloud-dataflow-java/worker/src/test/java/org/apache/beam/runners/dataflow/worker/StreamingDataflowWorkerTest.java
@@ -794,7 +794,8 @@
 
     final int numIters = 2000;
     for (int i = 0; i < numIters; ++i) {
-      server.addWorkToOffer(makeInput(i, 0, "key", DEFAULT_SHARDING_KEY));
+      server.addWorkToOffer(
+          makeInput(i, TimeUnit.MILLISECONDS.toMicros(i), "key", DEFAULT_SHARDING_KEY));
     }
 
     Map<Long, Windmill.WorkItemCommitRequest> result = server.waitForAndGetCommits(numIters);
@@ -829,7 +830,8 @@
 
     final int numIters = 2000;
     for (int i = 0; i < numIters; ++i) {
-      server.addWorkToOffer(makeInput(i, 0, "key", DEFAULT_SHARDING_KEY));
+      server.addWorkToOffer(
+          makeInput(i, TimeUnit.MILLISECONDS.toMicros(i), "key", DEFAULT_SHARDING_KEY));
     }
 
     Map<Long, Windmill.WorkItemCommitRequest> result = server.waitForAndGetCommits(numIters);