diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignmentManager.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignmentManager.java
index dfb6310c976..f3a1f706c10 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignmentManager.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignmentManager.java
@@ -60,8 +60,8 @@ import org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore;
 import org.apache.hadoop.hbase.procedure2.util.StringUtils;
 import org.apache.hadoop.hbase.regionserver.RegionServerAbortedException;
 import org.apache.hadoop.hbase.regionserver.RegionServerStoppedException;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
 import org.apache.hadoop.hbase.testclassification.MasterTests;
-import org.apache.hadoop.hbase.testclassification.MediumTests;
 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.FSUtils;
 import org.apache.hadoop.ipc.RemoteException;
@@ -90,7 +90,7 @@ import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProto
 import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;
 import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;
 
-@Category({MasterTests.class, MediumTests.class})
+@Category({MasterTests.class, LargeTests.class})
 public class TestAssignmentManager {
 
   @ClassRule