diff --git a/extras/mainnet.json b/extras/mainnet.json
index f17e7ff..6c9b4d3 100644
--- a/extras/mainnet.json
+++ b/extras/mainnet.json
@@ -75,7 +75,8 @@
     },
     "cow": {
         "vault_relayer": "0xC92E8bdf79f0507f65a392b0ab4667716BFE0110",
-        "settlement": "0x9008D19f58AAbD9eD0D60971565AA8510560ab41"
+        "settlement": "0x9008D19f58AAbD9eD0D60971565AA8510560ab41",
+        "airdrop_merkle_distributor": "0x64646f112FfD6F1B7533359CFaAF7998F23C8c40"
     },
     "one_inch":{
         "settlement": "0xad3b67bca8935cb510c8d18bd45f0b94f54a968f"