diff --git a/khl/card/interface.py b/khl/card/interface.py
index b314ff05..3e308d63 100644
--- a/khl/card/interface.py
+++ b/khl/card/interface.py
@@ -41,6 +41,7 @@ class Theme(_TypeEnum):
         WARNING = 'warning'
         INFO = 'info'
         NONE = 'none'
+        INVISIBLE = 'invisible'
 
     class Size(_TypeEnum):
         """describes a component's size"""