diff --git a/package-lock.json b/package-lock.json
index 0eaa41e..6685c1f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "timecut",
-  "version": "0.3.3",
+  "version": "0.3.4-prerelease",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 5dacb32..7d0b62d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "timecut",
-  "version": "0.3.3",
+  "version": "0.3.4-prerelease",
   "description": "Record smooth movies of web pages",
   "repository": {
     "type": "git",