diff --git a/brownie-config.yaml b/brownie-config.yaml
index 4f1c3f8..f4a5639 100644
--- a/brownie-config.yaml
+++ b/brownie-config.yaml
@@ -6,3 +6,4 @@ networks:
       accounts: 1
       mnemonic: brownie
       fork: https://opt-mainnet.g.alchemy.com/v2/TYO_nS5GvA15ccCxYMEzTkAxQHrqk801
+      evm_version: shanghai