diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/cluster/impl/ClusterMembershipEventType.java b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/impl/ClusterMembershipEventType.java
new file mode 100644
index 0000000..cdfd145
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/cluster/impl/ClusterMembershipEventType.java
@@ -0,0 +1,8 @@
+package org.onlab.onos.store.cluster.impl;
+
+public enum ClusterMembershipEventType {
+    NEW_MEMBER,
+    LEAVING_MEMBER,
+    UNREACHABLE_MEMBER,
+    HEART_BEAT,
+}