diff --git a/yearn/treasury/constants.py b/yearn/treasury/constants.py
index 841f73bfc..d44a12629 100644
--- a/yearn/treasury/constants.py
+++ b/yearn/treasury/constants.py
@@ -3,6 +3,11 @@
 from yearn.networks import Network
 from yearn.prices.constants import weth
 
+# The buyback contract
+BUYER = {
+    Network.Mainnet: "0x6903223578806940bd3ff0C51f87aa43968424c8",
+}.get(chain.id, None)
+
 YFI_LIKE = {
     Network.Mainnet: {
         '0x0bc529c00C6401aEF6D220BE8C6Ea1667F6Ad93e',  # YFI