diff --git a/package-lock.json b/package-lock.json
index 794cb91..af4a986 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -231,9 +231,9 @@
       }
     },
     "debug": {
-      "version": "2.6.8",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.8.tgz",
-      "integrity": "sha1-5zFTHKLt4n0YgiJCfaF4IdaP9Pw=",
+      "version": "2.6.9",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+      "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
       "dev": true,
       "requires": {
         "ms": "2.0.0"
@@ -680,6 +680,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -948,14 +949,6 @@
             "which": "^1.2.9"
           }
         },
-        "debug": {
-          "version": "2.6.8",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
         "debug-log": {
           "version": "1.0.1",
           "bundled": true,
@@ -1472,7 +1465,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "loose-envify": {
           "version": "1.3.1",
@@ -1568,8 +1562,7 @@
         },
         "ms": {
           "version": "2.0.0",
-          "bundled": true,
-          "dev": true
+          "bundled": true
         },
         "normalize-package-data": {
           "version": "2.3.8",