diff --git a/java-spanner/google-cloud-spanner/src/test/java/com/google/cloud/spanner/LocationAwareSharedBackendReplicaHarnessTest.java b/java-spanner/google-cloud-spanner/src/test/java/com/google/cloud/spanner/LocationAwareSharedBackendReplicaHarnessTest.java
index 287862c461bc..6ea248288ac1 100644
--- a/java-spanner/google-cloud-spanner/src/test/java/com/google/cloud/spanner/LocationAwareSharedBackendReplicaHarnessTest.java
+++ b/java-spanner/google-cloud-spanner/src/test/java/com/google/cloud/spanner/LocationAwareSharedBackendReplicaHarnessTest.java
@@ -57,11 +57,13 @@
 import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
 @RunWith(JUnit4.class)
+@Ignore("Flaky test, tracked in b/509979376")
 public class LocationAwareSharedBackendReplicaHarnessTest {
 
   private static final String PROJECT = "fake-project";