diff --git a/ac_solver/envs/ac_env.py b/ac_solver/envs/ac_env.py
index 6d41fd9..16488f4 100644
--- a/ac_solver/envs/ac_env.py
+++ b/ac_solver/envs/ac_env.py
@@ -91,6 +91,7 @@ def __init__(self, config: ACEnvConfig = ACEnvConfig()):
             for i in range(self.n_gen)
         ]  # lengths of relators in the current state
         self.actions = []  # list of actions from the initial state
+        self.supermoves = None  # dict of supermoves when implemented; None for now
 
     def step(self, action):
         self.actions += [action]