diff --git a/.env.example b/.env.example
index 3dcaa1b..2277e3d 100644
--- a/.env.example
+++ b/.env.example
@@ -1,2 +1,2 @@
-export API_KEY_ALCHEMY="YOUR_API_KEY_ALCHEMY"
 export FOUNDRY_PROFILE="default"
+export RPC_URL_MAINNET="YOUR_RPC_URL_MAINNET"
diff --git a/foundry.toml b/foundry.toml
index 2103ccc..bd61c9d 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -24,4 +24,4 @@
 
 [rpc_endpoints]
   localhost = "http://localhost:8545"
-  mainnet = "https://eth-mainnet.g.alchemy.com/v2/${API_KEY_ALCHEMY}"
+  mainnet = "${RPC_URL_MAINNET}"