diff --git a/tool_build.sh b/tool_build.sh
index bfac031a1..c6f1fba5f 100755
--- a/tool_build.sh
+++ b/tool_build.sh
@@ -1,3 +1,4 @@
 #!/usr/bin/env sh
 
+rm -rf ./lib/*.jar
 mvn clean package -DskipTests