diff --git a/package.json b/package.json
index 18c50ef..1dc75d0 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "gitbook-plugin-mermaid",
   "description": "Plugin for GitBook which renders Mermaid flow from markdown.",
   "main": "index.js",
-  "version": "0.0.3",
+  "version": "0.0.4-pre",
   "engines": {
     "gitbook": "*"
   },