diff --git a/package-lock.json b/package-lock.json
index e57fae6..8bde574 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,9 +21,9 @@
             }
         },
         "acorn": {
-            "version": "6.2.1",
-            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.1.tgz",
-            "integrity": "sha512-JD0xT5FCRDNyjDda3Lrg/IxFscp9q4tiYtxE1/nOzlKCk7hIRuYjhq1kCNkbPjMRMZuFq20HNQn1I9k8Oj0E+Q==",
+            "version": "6.4.1",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+            "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
             "dev": true
         },
         "acorn-dynamic-import": {
@@ -296,7 +296,7 @@
                 },
                 "util": {
                     "version": "0.10.3",
-                    "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+                    "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
                     "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
                     "dev": true,
                     "requires": {
@@ -1006,7 +1006,7 @@
         },
         "convert-source-map": {
             "version": "1.1.3",
-            "resolved": "http://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
+            "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
             "integrity": "sha1-SCnId+n+SbMWHzvzZziI4gRpmGA=",
             "dev": true
         },
@@ -2958,7 +2958,7 @@
                 },
                 "webrtc-adapter": {
                     "version": "1.4.0",
-                    "resolved": "http://registry.npmjs.org/webrtc-adapter/-/webrtc-adapter-1.4.0.tgz",
+                    "resolved": "https://registry.npmjs.org/webrtc-adapter/-/webrtc-adapter-1.4.0.tgz",
                     "integrity": "sha1-WCiaY9BUxls2+w7zieovbQx/XZg=",
                     "requires": {
                         "sdp": "^1.0.0"
@@ -4307,7 +4307,7 @@
         },
         "readable-stream": {
             "version": "2.3.6",
-            "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+            "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
             "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
             "dev": true,
             "requires": {