diff --git a/package.json b/package.json
index 5925fc7..fa12084 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "d3-time-format",
-  "version": "2.1.3",
+  "version": "2.2.0",
   "description": "A JavaScript time formatter and parser inspired by strftime and strptime.",
   "keywords": [
     "d3",