diff --git a/finrl/meta/env_stock_trading/env_stocktrading.py b/finrl/meta/env_stock_trading/env_stocktrading.py
index a1698d529..57a18cc2b 100644
--- a/finrl/meta/env_stock_trading/env_stocktrading.py
+++ b/finrl/meta/env_stock_trading/env_stocktrading.py
@@ -355,7 +355,7 @@ def step(self, actions):
 
         return self.state, self.reward, self.terminal, False, {}
 
-    def reset(self):
+    def reset(self, seed=None):
         # initiate state
         self.state = self._initiate_state()