diff --git a/package-lock.json b/package-lock.json
index ffa63af..2f541bd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
         "@types/base64-js": "^1.2.5",
         "@types/chai": "^4.1.3",
         "@types/elliptic": "^6.4.0",
-        "@types/mocha": "^8.0.3",
+        "@types/mocha": "^9.0.0",
         "chai": "^4.1.2",
         "mocha": "^8.1.2",
         "ts-node": "^9.0.0",
@@ -196,9 +196,9 @@
       }
     },
     "node_modules/@types/mocha": {
-      "version": "8.0.4",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-8.0.4.tgz",
-      "integrity": "sha512-M4BwiTJjHmLq6kjON7ZoI2JMlBvpY3BYSdiP6s/qCT3jb1s9/DeJF0JELpAxiVSIxXDzfNKe+r7yedMIoLbknQ==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-9.0.0.tgz",
+      "integrity": "sha512-scN0hAWyLVAvLR9AyW7HoFF5sJZglyBsbPuHO4fv7JRvfmPBMfp1ozWqOf/e4wwPNxezBZXRfWzMb6iFLgEVRA==",
       "dev": true
     },
     "node_modules/@types/node": {
@@ -1966,9 +1966,9 @@
       }
     },
     "@types/mocha": {
-      "version": "8.0.4",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-8.0.4.tgz",
-      "integrity": "sha512-M4BwiTJjHmLq6kjON7ZoI2JMlBvpY3BYSdiP6s/qCT3jb1s9/DeJF0JELpAxiVSIxXDzfNKe+r7yedMIoLbknQ==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-9.0.0.tgz",
+      "integrity": "sha512-scN0hAWyLVAvLR9AyW7HoFF5sJZglyBsbPuHO4fv7JRvfmPBMfp1ozWqOf/e4wwPNxezBZXRfWzMb6iFLgEVRA==",
       "dev": true
     },
     "@types/node": {
diff --git a/package.json b/package.json
index a4a39d5..4aa4224 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "@types/base64-js": "^1.2.5",
     "@types/chai": "^4.1.3",
     "@types/elliptic": "^6.4.0",
-    "@types/mocha": "^8.0.3",
+    "@types/mocha": "^9.0.0",
     "chai": "^4.1.2",
     "mocha": "^8.1.2",
     "ts-node": "^9.0.0",