diff --git a/package.json b/package.json
index ba4d04d..113b8b5 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "accurate",
-    "version": "1.5.4",
+    "version": "1.5.5",
     "description": "An precision calculation for JavaScript and Node.js. supports numbers, decimals, strings, arrays, matrices and expression. 解决 JavaScript 与 Node.js 精度计算（小数、浮点数计算精度）问题。支持数字、小数、字符串、数组、矩阵和表达式。",
     "repository": {
         "type": "git",