diff --git a/Demo/scripts/README b/Demo/scripts/README
index 1b8e03ab3fd..e83f5be4977 100644
--- a/Demo/scripts/README
+++ b/Demo/scripts/README
@@ -37,5 +37,6 @@ pp.py			Emulate some Perl command line options
 primes.py		Print prime numbers
 ptags.py		Create vi tags file for Python modules
 suff.py			Sort a list of files by suffix
+unbirthday.py		Print unbirthday count
 which.py		Find a program in $PATH
 xxci.py			Wrapper for rcsdiff and ci