diff --git a/.cvsignore b/.cvsignore
index d703357e4b..9f767848d7 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -14,4 +14,5 @@ util.log
 poi.ipr
 release-bin
 POILogger.log
-jakarta-poi.ipr
\ No newline at end of file
+jakarta-poi.ipr
+build.number