diff --git a/package.json b/package.json
index 3bb661c821..e5c6017cf3 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "acorn-6to5",
   "description": "Acorn fork used by 6to5",
   "main": "acorn_csp.js",
-  "version": "0.11.1-30",
+  "version": "0.11.1-31",
   "maintainers": [
     {
       "name": "Marijn Haverbeke",