diff --git a/.env.example b/.env.example
index 98c1028..271e767 100644
--- a/.env.example
+++ b/.env.example
@@ -9,3 +9,4 @@ export API_KEY_POLYGONSCAN="YOUR_API_KEY_POLYGONSCAN"
 export API_KEY_SNOWTRACE="YOUR_API_KEY_SNOWTRACE"
 export MNEMONIC="YOUR_MNEMONIC"
 export FOUNDRY_PROFILE="default"
+export MAINNET_FORK_URL="YOUR_MAINNET_FORK_URL"
\ No newline at end of file