diff --git a/package-lock.json b/package-lock.json
index 98fbeba..5a3e6ea 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1780,6 +1780,7 @@
       "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.12.tgz",
       "integrity": "sha512-WvJ193OHa0GHPEL+AycEJgxvBEwyfRkN1vhjca23OaPVMCaLCXTd5qAu82AjTcgP1UJmytkOKb63Ypde7raDIg==",
       "dev": true,
+      "optional": true,
       "requires": {
         "graceful-fs": "^4.1.2",
         "inherits": "~2.0.0",
@@ -2283,9 +2284,9 @@
       }
     },
     "http-proxy": {
-      "version": "1.18.0",
-      "resolved": "https://registry.npmjs.org/http-proxy/-/http-proxy-1.18.0.tgz",
-      "integrity": "sha512-84I2iJM/n1d4Hdgc6y2+qY5mDaz2PUVjlg9znE9byl+q0uC3DeByqBGReQu5tpLK0TAqTIXScRUV+dg7+bUPpQ==",
+      "version": "1.18.1",
+      "resolved": "https://registry.npmjs.org/http-proxy/-/http-proxy-1.18.1.tgz",
+      "integrity": "sha512-7mz/721AbnJwIVbnaSv1Cz3Am0ZLT/UBwkC92VlxhXv/k/BBQfM2fXElQNC27BVGr0uwUpplYPQM9LnaBMR5NQ==",
       "dev": true,
       "requires": {
         "eventemitter3": "^4.0.0",
@@ -4149,7 +4150,8 @@
       "version": "2.2.8",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
       "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "run-async": {
       "version": "2.3.0",