diff --git a/package-lock.json b/package-lock.json
index e3032e7..45f5138 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "gettext-parser",
-  "version": "3.1.1",
+  "version": "4.0.0-alpha.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index b3608c5..020a59b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "gettext-parser",
   "description": "Parse and compile gettext po and mo files to/from json, nothing more, nothing less",
-  "version": "3.1.1",
+  "version": "4.0.0-alpha.0",
   "author": "Andris Reinman",
   "contributors": [
     {