diff --git a/package-lock.json b/package-lock.json
index 9cb7544..cdc9e38 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,9 +11,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "5.4.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.4.1.tgz",
-      "integrity": "sha512-XLmq3H/BVvW6/GbxKryGxWORz1ebilSsUDlyC27bXhWGWAZWkGwS6FLHjOlwFXNFoWFQEO/Df4u0YYd0K3BQgQ==",
+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+      "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
       "dev": true
     },
     "ansi-regex": {