diff --git a/lib/mempool/mempool.js b/lib/mempool/mempool.js
index 6c998f8f..7b30c15f 100644
--- a/lib/mempool/mempool.js
+++ b/lib/mempool/mempool.js
@@ -2375,7 +2375,7 @@ function MempoolCache(options) {
     this.db = LDB(options);
 }
 
-MempoolCache.VERSION = 1;
+MempoolCache.VERSION = 2;
 
 MempoolCache.prototype.getVersion = co(function* getVersion() {
   var data = yield this.db.get(layout.V);