diff --git a/sample/package.json b/sample/package.json
old mode 100755
new mode 100644
index 578b04a..83e2354
--- a/sample/package.json
+++ b/sample/package.json
@@ -16,6 +16,6 @@
         "redis-sub": "../src/subs/redis-sub"
     },
     "devDependencies": {
-        "tslint": "^5.0.0"
+        "tslint": "^6.1.3"
     }
 }