diff --git a/src/currency.rs b/src/currency.rs
index 58f9c68..48fa0d8 100644
--- a/src/currency.rs
+++ b/src/currency.rs
@@ -31,6 +31,7 @@ impl Symbol {
     pub const DERIV_BTC: Symbol = Symbol::new_static("BTCF0");
     pub const DERIV_ETH: Symbol = Symbol::new_static("ETHF0");
     pub const DERIV_USDT: Symbol = Symbol::new_static("USTF0");
+    pub const DERIV_ADA: Symbol = Symbol::new_static("ADAF0");
 
     // Paper trading
     pub const TESTBTC: Symbol = Symbol::new_static("TESTBTC");