diff --git a/cri_lib/robot_state.py b/cri_lib/robot_state.py
index aeacc8c..c1d1a5c 100644
--- a/cri_lib/robot_state.py
+++ b/cri_lib/robot_state.py
@@ -27,6 +27,7 @@ class KinematicsState(Enum):
     VIRTUAL_BOX3 = 33
     VIRTUAL_BOX4 = 34
     VIRTUAL_BOX5 = 35
+    UNKNOWN = 98
     MOTION_NOT_ALLOWED = 99