diff --git a/echo/runner.py b/echo/runner.py
index dcf023b..6b3e06d 100644
--- a/echo/runner.py
+++ b/echo/runner.py
@@ -38,7 +38,7 @@
 DEFAULT_PORT = 8989
 MODES = frozenset({"echo", "gray", "invert", "blur"})
 
-state: "EchoSession | None" = None
+state: EchoSession | None = None
 
 
 @dataclass