diff --git a/HISTORY.md b/HISTORY.md
index 034bbed..ae04923 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -4,6 +4,8 @@ unreleased
   * deps: accepts@~1.2.7
     - deps: mime-types@~2.0.11
     - deps: negotiator@0.5.3
+  * deps: debug@~2.2.0
+    - deps: ms@0.7.1
 
 1.6.3 / 2015-03-13
 ==================
diff --git a/package.json b/package.json
index 0a39202..f4d62bc 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   "dependencies": {
     "accepts": "~1.2.7",
     "batch": "0.5.2",
-    "debug": "~2.1.3",
+    "debug": "~2.2.0",
     "escape-html": "1.0.1",
     "http-errors": "~1.3.1",
     "mime-types": "~2.0.10",