diff --git a/package-lock.json b/package-lock.json
index dafc9b7..86e9873 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,6 +9,7 @@
       "version": "0.1.0",
       "license": "MIT",
       "dependencies": {
+        "bufferutil": "^4.0.9",
         "finalhandler": "^1.3.1",
         "serve-static": "^1.16.2",
         "winston": "^3.17.0",
@@ -25,7 +26,7 @@
         "typescript": "^4.1.5"
       },
       "optionalDependencies": {
-        "bufferutil": "^4.0.8",
+        "bufferutil": "^4.0.9",
         "utf-8-validate": "^6.0.5"
       }
     },
@@ -1701,9 +1702,9 @@
       "dev": true
     },
     "node_modules/bufferutil": {
-      "version": "4.0.8",
-      "resolved": "https://registry.npmjs.org/bufferutil/-/bufferutil-4.0.8.tgz",
-      "integrity": "sha512-4T53u4PdgsXqKaIctwF8ifXlRTTmEPJ8iEPWFdGZvcf7sbwYo6FKFEX9eNNAnzFZ7EzJAQ3CJeOtCRA4rDp7Pw==",
+      "version": "4.0.9",
+      "resolved": "https://registry.npmjs.org/bufferutil/-/bufferutil-4.0.9.tgz",
+      "integrity": "sha512-WDtdLmJvAuNNPzByAYpRo2rF1Mmradw6gvWsQKf63476DDXmomT9zUiGypLcG4ibIM67vhAj8jJRdbmEws2Aqw==",
       "hasInstallScript": true,
       "optional": true,
       "dependencies": {
diff --git a/package.json b/package.json
index 567f23d..0b5804b 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "typescript": "^4.1.5"
   },
   "optionalDependencies": {
-    "bufferutil": "^4.0.8",
+    "bufferutil": "^4.0.9",
     "utf-8-validate": "^6.0.5"
   },
   "private": true