diff --git a/package-lock.json b/package-lock.json
index 97a2e68..a5ac910 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -429,9 +429,9 @@
       }
     },
     "acorn": {
-      "version": "6.2.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
-      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw=="
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+      "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA=="
     },
     "after": {
       "version": "0.8.2",
@@ -6910,7 +6910,7 @@
           "dependencies": {
             "get-stream": {
               "version": "3.0.0",
-              "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+              "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
               "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ="
             }
           }
@@ -7239,7 +7239,7 @@
           "dependencies": {
             "get-stream": {
               "version": "3.0.0",
-              "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+              "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
               "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ="
             }
           }