diff --git a/source/_lovelace/thermostat.markdown b/source/_lovelace/thermostat.markdown
index ba54973011a..941092e775e 100644
--- a/source/_lovelace/thermostat.markdown
+++ b/source/_lovelace/thermostat.markdown
@@ -25,6 +25,10 @@ name:
   description: Overwrites friendly name.
   type: string
   default: Name of Entity.
+theme:
+  required: false
+  description: Set to any theme within `themes.yaml`
+  type: string
 {% endconfiguration %}
 
 ## Example