diff --git a/composer.json b/composer.json
index 32e8242..2abee9f 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
   "name": "signifyd/signifyd-php",
   "description": "Signifyd client API plugin for PHP",
   "type": "library",
-  "version": "3.1.3",
+  "version": "4.0.0",
   "license": [
     "MIT"
   ],