Thanks @mperham!

Author: jc00ke

contributions.md

@@ -49,3 +49,4 @@ A log for contributions and some expenses.
 | 2020/02/25 | $98.94         |                   | -$98.94   | Meetup                                       |
 | 2019/03/03 |                | $98.94            | $0.00     | [TimescaleDB](https://www.timescale.com)     |
 | 2020/03/29 | $86.00         |                   | -$86.00   | Gandi DNS renewals                           |
+| 2019/03/29 |                | $86.00            | $0.00     | [Sidekiq](http://sidekiq.org/)               |