diff --git a/pytedee_async/lock.py b/pytedee_async/lock.py
index d8e8bbe..4f7407a 100644
--- a/pytedee_async/lock.py
+++ b/pytedee_async/lock.py
@@ -17,6 +17,7 @@ class TedeeLockState(IntEnum):
     PULLING = 8
     UNKNOWN = 9
     UPDATING = 18
+    ERROR = 255
 
 
 class TedeeLock:
diff --git a/setup.py b/setup.py
index 8551254..3f05ad3 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="pytedee_async",
-    version="0.2.18",
+    version="0.2.20",
     author="Josef Zweck",
     author_email="24647999+zweckj@users.noreply.github.com",
     description="A Tedee Lock Client package",