diff --git a/grpc-gcp-java/src/test/java/com/google/cloud/grpc/GcpManagedChannelTest.java b/grpc-gcp-java/src/test/java/com/google/cloud/grpc/GcpManagedChannelTest.java
index 6d8567e85ebf..eb191a4871f4 100644
--- a/grpc-gcp-java/src/test/java/com/google/cloud/grpc/GcpManagedChannelTest.java
+++ b/grpc-gcp-java/src/test/java/com/google/cloud/grpc/GcpManagedChannelTest.java
@@ -81,6 +81,7 @@
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
@@ -1842,6 +1843,7 @@ private static void waitForStateCallbacks(ExecutorService executorService) throw
     executorService.submit(() -> {}).get();
   }
 
+  @Ignore("Flaky test: b/579437259")
   @Test
   public void testUnresponsiveDetection() throws InterruptedException {
     // Watch debug messages.