diff -r 2cdb00f797b1 -r 7631de7518fc src/Pure/System/isabelle_tool.scala
--- a/src/Pure/System/isabelle_tool.scala	Sun Sep 15 16:45:13 2024 +0200
+++ b/src/Pure/System/isabelle_tool.scala	Mon Sep 16 13:53:43 2024 +0200
@@ -157,7 +157,6 @@
   Sync.isabelle_tool,
   Update_Cartouches.isabelle_tool,
   Update_Comments.isabelle_tool,
-  Update_Header.isabelle_tool,
   Update_Then.isabelle_tool,
   Update_Theorems.isabelle_tool,
   Update_Tool.isabelle_tool,