diff --git a/builder.json b/builder.json
index 14763d0..ec45884 100644
--- a/builder.json
+++ b/builder.json
@@ -32,6 +32,6 @@
         "NO_INTERACTION": "1"
     },
     "test_steps": [
-        ["./dev-scripts/run_tests"]
+        ["./dev-scripts/run_tests.sh"]
     ]
 }