diff --git a/docs/BOUNTIES.md b/docs/BOUNTIES.md
index 7e7ee3b8d3..9d0718c572 100644
--- a/docs/BOUNTIES.md
+++ b/docs/BOUNTIES.md
@@ -9,6 +9,7 @@ Get paid to improve openpilot!
 * once you open a PR, the bounty is locked to you until you stop working on it
 * open a ticket at [comma.ai/support](https://comma.ai/support/shop-order) with links to your PRs to claim
 * get an extra 20% if you redeem your bounty in [comma shop](https://comma.ai/shop) credit (including refunds on previous orders)
+* for bounties >$100, the first PR gets a lock, which times out after a week of no progress
 
 We put up each bounty with the intention that it'll get merged, but occasionally the right resolution is to close the bounty, which only becomes clear once some effort is put in. 
 This is still valuable work, so we'll pay out $100 for getting any bounty closed with a good explanation.