diff --git a/package-lock.json b/package-lock.json
index 5cd3e53..28d3bd0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,9 +15,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-2.4.0.tgz",
-      "integrity": "sha512-xeKP59REgow5TPBJh3S9BRIm7DDG+Rz3Nt4ANWGUkjk4305DHpyUD5CyMJ6nd2JMmZuFyx4mjvvlCtSJLRnN6w=="
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.4.2.tgz",
+      "integrity": "sha512-NyJV7sJgoGYqbtNUWgzzOGW4T6rR19FmX1IJgXGdapGPWsuMelGJn9h03nos0iqfforCbCB0iYIR0MtIuIFLLw=="
     },
     "@openzeppelin/test-helpers": {
       "version": "0.5.4",
diff --git a/package.json b/package.json
index 50a8d00..e84f710 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@openzeppelin/contracts": "^2.4.0",
+    "@openzeppelin/contracts": "^4.4.2",
     "@openzeppelin/test-helpers": "^0.5.4",
     "web3-utils": "^1.2.5-rc.0"
   },