diff --git a/package-lock.json b/package-lock.json
index 09f9f59..fe6e4fe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,9 +14,9 @@
         "log4node": "0.1.6",
         "lru-cache": "4.1.x",
         "mkdirp": "0.5.1",
+        "mustache": "4.2.0",
         "optimist": "0.6.1",
-        "requireg": "^0.2.1",
-        "ws": "8.17.1"
+        "requireg": "^0.2.1"
       },
       "devDependencies": {
         "istanbul": "0.4.x",
@@ -42,7 +42,7 @@
         "maxmind-geolite-mirror": "1.0.x",
         "moment": "2.29.4",
         "msgpack": "1.0.x",
-        "mustache": "2.3.0",
+        "mustache": "4.2.0",
         "object.omit": "3.0.0",
         "oniguruma": "7.2.x",
         "redis": "4.6.14",
@@ -1753,15 +1753,12 @@
       }
     },
     "node_modules/mustache": {
-      "version": "2.3.0",
-      "resolved": "http://registry.npmjs.org/mustache/-/mustache-2.3.0.tgz",
-      "integrity": "sha1-QCj3d4sXcIpImTCm5SrDvKDaQdA=",
+      "version": "4.2.0",
+      "resolved": "http://registry.npmjs.org/mustache/-/mustache-4.2.0.tgz",
+      "integrity": "sha512-71ippSywq5Yb7/tVYyGbkBggbU8H3u5Rz56fH60jGFgr8uHwxs+aSKeqmluIVzM0m0kB7xQjKS6qPfd0b2ZoqQ==",
       "optional": true,
       "bin": {
         "mustache": "bin/mustache"
-      },
-      "engines": {
-        "npm": ">=1.4.0"
       }
     },
     "node_modules/nan": {
@@ -4014,9 +4011,9 @@
       }
     },
     "mustache": {
-      "version": "2.3.0",
-      "resolved": "http://registry.npmjs.org/mustache/-/mustache-2.3.0.tgz",
-      "integrity": "sha1-QCj3d4sXcIpImTCm5SrDvKDaQdA=",
+      "version": "4.2.0",
+      "resolved": "http://registry.npmjs.org/mustache/-/mustache-4.2.0.tgz",
+      "integrity": "sha512-71ippSywq5Yb7/tVYyGbkBggbU8H3u5Rz56fH60jGFgr8uHwxs+aSKeqmluIVzM0m0kB7xQjKS6qPfd0b2ZoqQ==",
       "optional": true
     },
     "nan": {
diff --git a/package.json b/package.json
index d937600..6ab49a1 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,7 @@
     "maxmind-geolite-mirror": "1.0.x",
     "moment": "2.29.4",
     "msgpack": "1.0.x",
-    "mustache": "2.3.0",
+    "mustache": "4.2.0",
     "object.omit": "3.0.0",
     "oniguruma": "7.2.x",
     "redis": "4.6.14",