diff --git a/package-lock.json b/package-lock.json
index 27cc0f7..1fd2143 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@matrixai/logger",
-  "version": "4.0.3",
+  "version": "4.0.4-alpha.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@matrixai/logger",
-      "version": "4.0.3",
+      "version": "4.0.4-alpha.0",
       "license": "Apache-2.0",
       "dependencies": {
         "fast-check": "^4.1.1",
diff --git a/package.json b/package.json
index fde67a9..11e2765 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@matrixai/logger",
-  "version": "4.0.3",
+  "version": "4.0.4-alpha.0",
   "author": "Roger Qiu",
   "description": "Python-like JavaScript Logger",
   "license": "Apache-2.0",