diff --git a/package-lock.json b/package-lock.json
index acf5d86..6117f20 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -95,9 +95,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.0.tgz",
-      "integrity": "sha512-kL5CuoXA/dgxlBbVrflsflzQ3PAas7RYZB52NOm/6839iVYJgKMJ3cQJD+t2i5+qFa8h3MDpEOJiS64E8JLnSQ=="
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
+      "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg=="
     },
     "acorn-walk": {
       "version": "7.0.0",
diff --git a/package.json b/package.json
index 9fa7e06..1585eb7 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "homepage": "https://github.com/pptang/js-engine-challenge#readme",
   "dependencies": {
-    "acorn": "^7.1.0",
+    "acorn": "^7.1.1",
     "acorn-walk": "^7.0.0"
   },
   "devDependencies": {