diff --git a/tool/release.sh b/tool/release.sh
index ceafc8890a..04c361a48a 100755
--- a/tool/release.sh
+++ b/tool/release.sh
@@ -3,7 +3,7 @@
 RUBYDIR=/home/ftp/pub/ruby
 EXTS='.tar.gz .tar.bz2 .tar.xz .zip'
 
-releases=`ls ruby-*|grep -o 'ruby-[0-9]\{1,2\}\.[0-9]\{1,2\}\.[0-9]\{1,2\}\(-\(preview\|rc\|p\)[0-9]\{1,4\}\)\?'|uniq`
+releases=`ls ruby-*|grep -o 'ruby-[0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}\(-\(preview\|rc\|p\)[0-9]\{1,4\}\)\?'|uniq`
 
 # check files
 for r in $releases