diff --git a/src/blunderboard/blunderevaluator.py b/src/blunderboard/blunderevaluator.py
index e7a6c31..a4be47e 100644
--- a/src/blunderboard/blunderevaluator.py
+++ b/src/blunderboard/blunderevaluator.py
@@ -1,6 +1,6 @@
 class BlunderEvaluator:
-    def reset(self):
+    def reset(self) -> None:
         pass
 
-    def move(self, move):
+    def move(self, move: str) -> None:
         pass