diff --git a/package-lock.json b/package-lock.json
index 8a58db7..d763ba9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -802,9 +802,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "5.7.3",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
-      "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+      "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
       "dev": true
     },
     "acorn-globals": {
@@ -818,9 +818,9 @@
       },
       "dependencies": {
         "acorn": {
-          "version": "6.0.1",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.1.tgz",
-          "integrity": "sha512-SiwgrRuRD2D1R6qjwwoopKcCTkmmIWjy1M15Wv+Nk/7VUsBad4P8GOPft2t6coDZG0TuR5dq9o1v0g8wo7F6+A==",
+          "version": "6.4.1",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+          "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
           "dev": true
         }
       }