diff --git a/pgx/kuhn_poker.py b/pgx/kuhn_poker.py
index 274a639e1..878141f5e 100644
--- a/pgx/kuhn_poker.py
+++ b/pgx/kuhn_poker.py
@@ -68,7 +68,7 @@ def id(self) -> core.EnvId:
 
     @property
     def version(self) -> str:
-        return "v0"
+        return "v1"
 
     @property
     def num_players(self) -> int: