diff --git a/Lecture15/socket/package-lock.json b/Lecture15/socket/package-lock.json
index 74d0715..b5c742c 100644
--- a/Lecture15/socket/package-lock.json
+++ b/Lecture15/socket/package-lock.json
@@ -581,7 +581,7 @@
       "integrity": "sha512-hczmV6bDgdaEbVqhAeVMM/jfUfzuEZHsQg6eOmLgJht6G3mPKMxYm75w2+qhAQZ+4X+1+ATZ+QFKeOZD5riHng==",
       "requires": {
         "component-emitter": "1.2.1",
-        "debug": "3.1.0",
+        "debug": "~3.1.0",
         "isarray": "2.0.1"
       },
       "dependencies": {