diff --git a/package-lock.json b/package-lock.json
index 1c2e60b..4969755 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1156,9 +1156,9 @@
       }
     },
     "i": {
-      "version": "0.3.6",
-      "resolved": "https://registry.npmjs.org/i/-/i-0.3.6.tgz",
-      "integrity": "sha1-2WyScyB28HJxG2sQ/X1PZa2O4j0="
+      "version": "0.3.7",
+      "resolved": "https://registry.npmjs.org/i/-/i-0.3.7.tgz",
+      "integrity": "sha512-FYz4wlXgkQwIPqhzC5TdNMLSE5+GS1IIDJZY/1ZiEPCT2S3COUVZeT5OW4BmW4r5LHLQuOosSwsvnroG9GR59Q=="
     },
     "iconv-lite": {
       "version": "0.4.24",
diff --git a/package.json b/package.json
index 99dbc8a..fd8d056 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   "author": "Choi Kyuhyeon",
   "license": "ISC",
   "dependencies": {
-    "i": "^0.3.6",
+    "i": "^0.3.7",
     "object-hash": "^2.0.0",
     "randomstring": "^1.1.5",
     "web3": "^1.2.1"