diff --git a/script/downcase b/script/downcase
new file mode 100755
index 0000000..9939e87
--- /dev/null
+++ b/script/downcase
@@ -0,0 +1,7 @@
+#! /usr/bin/env ruby
+# downcases all licenses in a git-friendly way
+
+Dir["_licenses/*"].each do |file|
+  system "git mv #{file} #{file.downcase}2"
+  system "git mv #{file.downcase}2 #{file.downcase}"
+end