diff --git a/package-lock.json b/package-lock.json
index 9729daa..b5aeeea 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -818,9 +818,12 @@
       "integrity": "sha1-YV6CjiM90aubua4JUODOzPpuytg="
     },
     "debug": {
-      "version": "0.7.4",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-0.7.4.tgz",
-      "integrity": "sha1-BuHqgILCyxTjmAbiLi9vdX+Srzk="
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+      "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+      "requires": {
+        "ms": "2.0.0"
+      }
     },
     "decamelize": {
       "version": "1.2.0",
@@ -979,6 +982,11 @@
         "utils-merge": "1.0.0"
       },
       "dependencies": {
+        "debug": {
+          "version": "0.7.4",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-0.7.4.tgz",
+          "integrity": "sha512-EohAb3+DSHSGx8carOSKJe8G0ayV5/i609OD0J2orCkuyae7SyZSz2aoLmQF2s0Pj5gITDebwPH7GFBlqOUQ1Q=="
+        },
         "type-is": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.0.0.tgz",
@@ -2879,6 +2887,13 @@
         "fresh": "0.2.2",
         "mime": "1.2.11",
         "range-parser": "1.0.0"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "0.7.4",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-0.7.4.tgz",
+          "integrity": "sha512-EohAb3+DSHSGx8carOSKJe8G0ayV5/i609OD0J2orCkuyae7SyZSz2aoLmQF2s0Pj5gITDebwPH7GFBlqOUQ1Q=="
+        }
       }
     },
     "serve-static": {
@@ -2908,6 +2923,13 @@
             "fresh": "0.2.0",
             "mime": "1.2.11",
             "range-parser": "0.0.4"
+          },
+          "dependencies": {
+            "debug": {
+              "version": "0.7.4",
+              "resolved": "https://registry.npmjs.org/debug/-/debug-0.7.4.tgz",
+              "integrity": "sha512-EohAb3+DSHSGx8carOSKJe8G0ayV5/i609OD0J2orCkuyae7SyZSz2aoLmQF2s0Pj5gITDebwPH7GFBlqOUQ1Q=="
+            }
           }
         }
       }
diff --git a/package.json b/package.json
index 848089e..a514701 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "cookie-parser": "~1.0.1",
     "coordtransform": "^2.1.2",
     "d3": "^4.12.2",
-    "debug": "~0.7.4",
+    "debug": "~3.1.0",
     "express": "~4.0.0",
     "fnv-plus": "^1.2.12",
     "grunt-cli": "^1.2.0",