diff --git a/package.json b/package.json
index 97e011c..61a5177 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "swetrix",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "description": "The JavaScript analytics client for Swetrix Analytics",
   "main": "dist/swetrix.cjs.js",
   "module": "dist/swetrix.es5.js",
diff --git a/src/Lib.ts b/src/Lib.ts
index f7494ef..cf14fc5 100644
--- a/src/Lib.ts
+++ b/src/Lib.ts
@@ -112,7 +112,7 @@ export interface PageViewsOptions {
    * @param payload - The pageview payload.
    * @returns The edited payload or `false` to prevent sending the pageview. If `true` is returned, the payload will be sent as-is.
    */
-  callback?: (payload: IPageViewPayload) => IPageViewPayload | boolean
+  callback?: (payload: IPageViewPayload) => Partial<IPageViewPayload> | boolean
 }
 
 export const defaultPageActions = {