diff --git a/package-lock.json b/package-lock.json
index 8cf2e9d..bfd63db 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "@openzeppelin/contracts": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-3.1.0.tgz",
-      "integrity": "sha512-dVXDnUKxrAKLzPdCRkz+N8qsVkK1XxJ6kk3zuI6zaQmcKxN7CkizoDP7lXxcs/Mi2I0mxceTRjJBqlzFffLJrQ=="
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.4.2.tgz",
+      "integrity": "sha512-NyJV7sJgoGYqbtNUWgzzOGW4T6rR19FmX1IJgXGdapGPWsuMelGJn9h03nos0iqfforCbCB0iYIR0MtIuIFLLw=="
     },
     "@sindresorhus/is": {
       "version": "0.14.0",
diff --git a/package.json b/package.json
index e7c0dc0..4571954 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "test": "test"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^3.1.0",
+    "@openzeppelin/contracts": "^4.4.2",
     "@truffle/contract": "^4.2.12",
     "body-parser": "^1.19.0",
     "express": "^4.17.1",