diff --git a/stress-test/run.sh b/stress-test/run.sh
index ba592ef..c2f4c28 100644
--- a/stress-test/run.sh
+++ b/stress-test/run.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 
 declare -a vsrs=(30 60)
 declare -a tickets=(30 60)