diff --git a/cross-chain/arbitrum/.gitignore b/cross-chain/arbitrum/.gitignore
index 27caf0599..b07695466 100644
--- a/cross-chain/arbitrum/.gitignore
+++ b/cross-chain/arbitrum/.gitignore
@@ -12,3 +12,4 @@
 
 # OZ
 /.openzeppelin/unknown-*.json
+!/.openzeppelin/unknown-42161.json