diff --git a/package-lock.json b/package-lock.json
index 9695685..49eb8fe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "sdag.js",
-  "version": "0.2.21",
+  "version": "0.2.22",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -733,11 +733,6 @@
       "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
       "dev": true
     },
-    "async-limiter": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
-      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
-    },
     "atob": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
@@ -8718,12 +8713,9 @@
       }
     },
     "ws": {
-      "version": "6.2.1",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-6.2.1.tgz",
-      "integrity": "sha512-GIyAXC2cB7LjvpgMt9EKS2ldqr0MTrORaleiOno6TweZ6r3TKtoFQWay/2PceJ3RuBasOHzXNn5Lrw1X0bEjqA==",
-      "requires": {
-        "async-limiter": "~1.0.0"
-      }
+      "version": "7.4.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A=="
     },
     "xdg-basedir": {
       "version": "3.0.0",
diff --git a/package.json b/package.json
index f4319bb..4b7d2b9 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "bitcore-mnemonic": "^1.7.0",
     "secp256k1": "^3.7.1",
     "thirty-two": "^1.0.2",
-    "ws": "^6.2.1"
+    "ws": "^7.4.6"
   },
   "devDependencies": {
     "@types/bip39": "^2.4.2",