diff --git a/package-lock.json b/package-lock.json
index 2303da2..c5c7f8c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "@openzeppelin/contracts": {
-      "version": "2.5.1",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-2.5.1.tgz",
-      "integrity": "sha512-qIy6tLx8rtybEsIOAlrM4J/85s2q2nPkDqj/Rx46VakBZ0LwtFhXIVub96LXHczQX0vaqmAueDqNPXtbSXSaYQ=="
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.4.2.tgz",
+      "integrity": "sha512-NyJV7sJgoGYqbtNUWgzzOGW4T6rR19FmX1IJgXGdapGPWsuMelGJn9h03nos0iqfforCbCB0iYIR0MtIuIFLLw=="
     },
     "@resolver-engine/core": {
       "version": "0.2.1",
diff --git a/package.json b/package.json
index 43db590..4af9e45 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   "author": "Alexey Pertsev <alexey@peppersec.com> (https://peppersec.com)",
   "license": "MIT",
   "dependencies": {
-    "@openzeppelin/contracts": "^2.5.1",
+    "@openzeppelin/contracts": "^4.4.2",
     "@truffle/hdwallet-provider": "^1.0.35",
     "dotenv": "^8.2.0",
     "truffle": "^5.1.26",