diff --git a/parse/src/test/java/com/alibaba/otter/canal/parse/inbound/group/DummyEventStore.java b/parse/src/test/java/com/alibaba/otter/canal/parse/inbound/group/DummyEventStore.java
index c542e5c0..d29921f1 100644
--- a/parse/src/test/java/com/alibaba/otter/canal/parse/inbound/group/DummyEventStore.java
+++ b/parse/src/test/java/com/alibaba/otter/canal/parse/inbound/group/DummyEventStore.java
@@ -23,6 +23,10 @@ public class DummyEventStore implements CanalEventStore<Event> {
 
     }
 
+    public void ack(Position position, Long seqId) throws CanalStoreException {
+
+    }
+
     public Events get(Position start, int batchSize) throws InterruptedException, CanalStoreException {
         return null;
     }
diff --git a/sink/src/test/java/com/alibaba/otter/canal/sink/stub/DummyEventStore.java b/sink/src/test/java/com/alibaba/otter/canal/sink/stub/DummyEventStore.java
index 7f786ef2..d97f08a0 100644
--- a/sink/src/test/java/com/alibaba/otter/canal/sink/stub/DummyEventStore.java
+++ b/sink/src/test/java/com/alibaba/otter/canal/sink/stub/DummyEventStore.java
@@ -15,6 +15,10 @@ public class DummyEventStore implements CanalEventStore<Event> {
 
     }
 
+    public void ack(Position position, Long seqId) throws CanalStoreException {
+
+    }
+
     public Events get(Position start, int batchSize) throws InterruptedException, CanalStoreException {
         return null;
     }