diff --git a/.env.example b/.env.example
index 79f0525..8878ffd 100644
--- a/.env.example
+++ b/.env.example
@@ -13,4 +13,6 @@ RINKEBY_URL=
 GOERLI_URL=
 ROPSTEN_URL=
 MUMBAI_URL=
+POLYGON_URL=
+
 REPORT_GAS=