diff --git a/jsr.json b/jsr.json
index 0146f46..4ce1e85 100644
--- a/jsr.json
+++ b/jsr.json
@@ -1,5 +1,5 @@
 {
   "name": "@badosz/holy-time",
-  "version": "3.4.5",
+  "version": "4.0.0",
   "exports": "./src/index.ts"
 }
diff --git a/package.json b/package.json
index 9364fdd..f3fa271 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "holy-time",
-  "version": "3.4.5",
+  "version": "4.0.0",
   "description": "Utility functions",
   "repository": "Yet another (type-safe) date time library",
   "main": "dist/index.js",