diff --git a/package-lock.json b/package-lock.json
index 8a453ef..593e24e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -284,10 +284,10 @@
         "accepts": "1.3.3",
         "base64id": "1.0.0",
         "cookie": "0.3.1",
-        "debug": "2.6.9",
-        "engine.io-parser": "2.1.1",
-        "uws": "0.14.5",
-        "ws": "3.3.2"
+        "debug": "~2.6.9",
+        "engine.io-parser": "~2.1.0",
+        "uws": "~0.14.4",
+        "ws": "~3.3.1"
       },
       "dependencies": {
         "accepts": {
@@ -295,7 +295,7 @@
           "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.3.tgz",
           "integrity": "sha1-w8p0NJOGSMPg2cHjKN1otiLChMo=",
           "requires": {
-            "mime-types": "2.1.17",
+            "mime-types": "~2.1.11",
             "negotiator": "0.6.1"
           }
         }