diff --git a/data/ecosystems/a/arbitrum.toml b/data/ecosystems/a/arbitrum.toml
index 2464cbbe..83516798 100644
--- a/data/ecosystems/a/arbitrum.toml
+++ b/data/ecosystems/a/arbitrum.toml
@@ -99,6 +99,9 @@ url = "https://github.com/OffchainLabs/token-bridge-sdk-old"
 [[repo]]
 url = "https://github.com/OffchainLabs/token-mock"
 
+[[repo]]
+url = "https://github.com/OffchainLabs/tornado-core"
+
 [[repo]]
 url = "https://github.com/OffchainLabs/uniswap-frontend"