diff --git a/CHANGELOG.md b/CHANGELOG.md
index 891ba39..86b373d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# 2.5.6
+* add an exception logic in SICEPAT.
+
 # 2.5.5
 * fixed an issue in SICEPAT is not working.
 
diff --git a/lib/courier/sicepat.js b/lib/courier/sicepat.js
index 0a652ab..6e0d458 100644
--- a/lib/courier/sicepat.js
+++ b/lib/courier/sicepat.js
@@ -140,6 +140,9 @@ module.exports = function (opts) {
         }
 
         try {
+          if (body.sicepat.status.code !== 200) {
+            return cb(body.sicepat.status.description)
+          }
           var result = handler.parser.trace(body.sicepat.result, number)
           cb(result ? null : tracker.error(tracker.ERROR.INVALID_NUMBER), result)
         } catch (e) {
diff --git a/package.json b/package.json
index 782057b..aae02e0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "delivery-tracker",
-  "version": "2.5.5",
+  "version": "2.5.6",
   "author": {
     "name": "egg",
     "email": "i@egg.pe.kr"