diff --git a/index.md b/index.md
index f8a903e..e23f19a 100644
--- a/index.md
+++ b/index.md
@@ -1140,6 +1140,7 @@ and enables thee to stop them and control thy expenditures for definite and grat
 - [hledger: Time planning](https://hledger.org/time-planning.html)
 - [time tracking tools](#time-logging)
 - [reddit: Ledger CLI time tracking and transaction account linking](https://www.reddit.com/r/plaintextaccounting/comments/e2sd0k/ledger_cli_time_tracking_and_transaction_account/)
+- [arbeitszeit.py](https://github.com/haansn08/arbeitszeit.py)
 
 ### inventory tracking