diff --git a/package.json b/package.json
index bc6065a..f060fb8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "fixed-merkle-tree",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "description": "Fixed depth merkle tree implementation with sequential inserts",
   "main": "src/merkleTree.js",
   "scripts": {
diff --git a/src/merkleTree.js b/src/merkleTree.js
index 4fc6b92..72612ea 100644
--- a/src/merkleTree.js
+++ b/src/merkleTree.js
@@ -161,8 +161,6 @@ class MerkleTree {
   serialize() {
     return {
       levels: this.levels,
-      capacity: this.capacity,
-      zeroElement: this.zeroElement,
       _zeros: this._zeros,
       _layers: this._layers,
     }
@@ -180,6 +178,8 @@ class MerkleTree {
   static deserialize(data, hashFunction) {
     const instance = Object.assign(Object.create(this.prototype), data)
     instance._hash = hashFunction || defaultHash
+    instance.capacity = 1 << instance.levels
+    instance.zeroElement = instance._zeros[0]
     return instance
   }
 }