diff --git a/package-lock.json b/package-lock.json
index 3ff4e03..f6a66fd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -676,11 +676,18 @@
       "dev": true
     },
     "debug": {
-      "version": "2.1.3",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-2.1.3.tgz",
-      "integrity": "sha1-zoqxte6PvuK/o7Yzyrk9NmtjQY4=",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+      "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
       "requires": {
-        "ms": "0.7.0"
+        "ms": "2.0.0"
+      },
+      "dependencies": {
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+          "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A=="
+        }
       }
     },
     "decode-uri-component": {
@@ -967,6 +974,14 @@
           "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.1.2.tgz",
           "integrity": "sha1-cv7D0k5Io0Mgc9kMEmQgBQYQBLE="
         },
+        "debug": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.1.3.tgz",
+          "integrity": "sha512-KWau3VQmxO3YwQCjJzMPPusOtI0hx3UGsqnY7RS+QHQjUeawpOVtJvAdeTrI2Ja5DTR8KH3xaEN8c+ADbXJWeg==",
+          "requires": {
+            "ms": "0.7.0"
+          }
+        },
         "mime-db": {
           "version": "1.45.0",
           "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.45.0.tgz",
@@ -1160,6 +1175,16 @@
         "debug": "~2.1.1",
         "escape-html": "1.0.1",
         "on-finished": "~2.2.0"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.1.3.tgz",
+          "integrity": "sha512-KWau3VQmxO3YwQCjJzMPPusOtI0hx3UGsqnY7RS+QHQjUeawpOVtJvAdeTrI2Ja5DTR8KH3xaEN8c+ADbXJWeg==",
+          "requires": {
+            "ms": "0.7.0"
+          }
+        }
       }
     },
     "for-in": {
@@ -2706,6 +2731,16 @@
         "ms": "0.7.0",
         "on-finished": "~2.2.0",
         "range-parser": "~1.0.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.1.3.tgz",
+          "integrity": "sha512-KWau3VQmxO3YwQCjJzMPPusOtI0hx3UGsqnY7RS+QHQjUeawpOVtJvAdeTrI2Ja5DTR8KH3xaEN8c+ADbXJWeg==",
+          "requires": {
+            "ms": "0.7.0"
+          }
+        }
       }
     },
     "serve-favicon": {
diff --git a/package.json b/package.json
index 96b1ea5..c7fcfee 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "bcrypt": ">=5.0.0",
     "body-parser": "~1.10.1",
     "cookie-parser": "~1.3.3",
-    "debug": "^2.1.3",
+    "debug": "^3.1.0",
     "express": "^4.12.0",
     "express-params": "0.0.3",
     "express-session": "^1.11.1",