diff --git a/update-header.sh b/update-header.sh
deleted file mode 100755
index 48da4dcd6125..000000000000
--- a/update-header.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-
-# Find all README.md files in subdirectories one level deep
-# and replace "### " with "## " at the beginning of lines
-find . -maxdepth 2 -type f -name "README.md" -exec sed -i '' 's/^### /## /' {} \;
-
-echo "Headers updated in README.md files."