diff --git a/build/tgz/tar_exclude.txt b/build/tgz/tar_exclude.txt
index b8def0773dd..7df8a47116c 100644
--- a/build/tgz/tar_exclude.txt
+++ b/build/tgz/tar_exclude.txt
@@ -78,6 +78,7 @@ CVS
 .#*
 .cache
 .cvsignore
+.externalToolBuilders
 .htaccess
 .settings
 .project