diff --git a/package-lock.json b/package-lock.json
index e5175f0..68634b9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "ms",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 09bf423..fc28cb3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ms",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "Tiny millisecond conversion utility",
   "repository": "zeit/ms",
   "main": "./index",