diff --git a/testdriver/theme.yml b/testdriver/theme.yml
index f464ffbae..fc7a728de 100644
--- a/testdriver/theme.yml
+++ b/testdriver/theme.yml
@@ -1,4 +1,4 @@
-version: 3.8.0
+version: 4.0.0
   steps:
     - prompt: "Focus electron"
       commands: