diff --git a/src/clockodo.ts b/src/clockodo.ts
index a0e038b9..62fee79e 100644
--- a/src/clockodo.ts
+++ b/src/clockodo.ts
@@ -311,7 +311,9 @@ export class Clockodo {
     return this.api.get("/targethours/" + id, remainingParams);
   }
 
-  async getTargethours(params?: Params): Promise<TargethoursReturnType> {
+  async getTargethours(
+    params?: Params<{ usersId?: number }>
+  ): Promise<TargethoursReturnType> {
     return this.api.get("/targethours", params);
   }