diff --git a/package-lock.json b/package-lock.json
index e3d22b3..5ef49dd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -108,6 +108,21 @@
         "qs": "6.2.0",
         "raw-body": "2.1.7",
         "type-is": "1.6.15"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
+          "integrity": "sha1-+HBX6ZWxofauaklgZkE3vFbwOdo=",
+          "requires": {
+            "ms": "0.7.1"
+          }
+        },
+        "ms": {
+          "version": "0.7.1",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
+          "integrity": "sha1-nNE8A62/8ltl7/3nzoZO6VIBcJg="
+        }
       }
     },
     "brace-expansion": {
@@ -259,11 +274,11 @@
       "integrity": "sha1-sNBClG2ylTu50pKQCmy19tASIDE="
     },
     "debug": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
-      "integrity": "sha1-+HBX6ZWxofauaklgZkE3vFbwOdo=",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+      "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
       "requires": {
-        "ms": "0.7.1"
+        "ms": "^2.1.1"
       }
     },
     "decamelize": {
@@ -554,6 +569,21 @@
         "messageformat": "0.3.1",
         "mustache": "2.3.0",
         "sprintf-js": "1.1.1"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
+          "integrity": "sha1-+HBX6ZWxofauaklgZkE3vFbwOdo=",
+          "requires": {
+            "ms": "0.7.1"
+          }
+        },
+        "ms": {
+          "version": "0.7.1",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
+          "integrity": "sha1-nNE8A62/8ltl7/3nzoZO6VIBcJg="
+        }
       }
     },
     "iconv-lite": {
@@ -766,9 +796,9 @@
       }
     },
     "ms": {
-      "version": "0.7.1",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
-      "integrity": "sha1-nNE8A62/8ltl7/3nzoZO6VIBcJg="
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "mustache": {
       "version": "2.3.0",
diff --git a/package.json b/package.json
index 3d07088..1ca2956 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "morgan": "^1.7.0",
     "cookie-parser": "^1.4.3",
     "body-parser": "~1.15.2",
-    "debug": "~2.2.0",
+    "debug": "~4.1.1",
     "jade": "~1.11.0",
     "i18n": "0.8.3"
   },