diff --git a/package-lock.json b/package-lock.json
index 30c2250..cba303f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "kill-the-news",
-  "version": "0.3.1",
+  "version": "0.4.0-develop",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "kill-the-news",
-      "version": "0.3.1",
+      "version": "0.4.0-develop",
       "license": "MIT",
       "dependencies": {
         "@hono/zod-openapi": "^1.4.0",
diff --git a/package.json b/package.json
index 22e369d..dede7f7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "kill-the-news",
-  "version": "0.3.1",
+  "version": "0.4.0-develop",
   "description": "Convert email newsletters into private RSS feeds using Cloudflare Workers",
   "main": "dist/worker.js",
   "scripts": {