diff --git a/src/currency.rs b/src/currency.rs
index 48fa0d8..83dbab7 100644
--- a/src/currency.rs
+++ b/src/currency.rs
@@ -32,6 +32,7 @@ impl Symbol {
     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");
+    pub const DERIV_POLKADOT: Symbol = Symbol::new_static("DOTF0");
 
     // Paper trading
     pub const TESTBTC: Symbol = Symbol::new_static("TESTBTC");