diff --git a/dev/builder/build.sh b/dev/builder/build.sh
index ca423a4b628..313986dcfe1 100755
--- a/dev/builder/build.sh
+++ b/dev/builder/build.sh
@@ -9,7 +9,7 @@ set -e
 echo "CKBuilder - Builds a release version of ckeditor-dev."
 echo ""
 
-CKBUILDER_VERSION="2.3.0"
+CKBUILDER_VERSION="2.3.1"
 CKBUILDER_URL="http://download.cksource.com/CKBuilder/$CKBUILDER_VERSION/ckbuilder.jar"
 
 PROGNAME=$(basename $0)