diff --git a/test/foundry/BaseSetup.t.sol b/test/foundry/BaseSetup.t.sol
index 0531419..8608ed3 100644
--- a/test/foundry/BaseSetup.t.sol
+++ b/test/foundry/BaseSetup.t.sol
@@ -67,7 +67,9 @@ contract BaseSetup is Test, ForkManagement {
     }
 
     function loadBaseAddresses(string memory json, string memory targetEnv) internal virtual {
-        bytes32 PROXY_IMPLEMENTATION_STORAGE_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
+        bytes32 PROXY_IMPLEMENTATION_STORAGE_SLOT = bytes32(
+            uint256(keccak256('eip1967.proxy.implementation')) - 1
+        );
 
         console.log('targetEnv:', targetEnv);