diff --git a/package-lock.json b/package-lock.json
index 1aec849..7fa4f3e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -58,9 +58,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-3.0.0.tgz",
-      "integrity": "sha512-u7oATjUK6jffDOoIjVQ7vJ2fnFKlfDS1CJzrMpp+YtGQ2fhdSk0kXjZTxk8Pj1SPVZRNES3yo0r144v8BsuRhQ==",
+      "version": "4.7.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.7.2.tgz",
+      "integrity": "sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA==",
       "dev": true
     },
     "@sindresorhus/is": {
diff --git a/package.json b/package.json
index 3f83dc6..d5016e9 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "repository": "https://github.com/aave/flashloan-box",
   "dependencies": {},
   "devDependencies": {
-    "@openzeppelin/contracts": "^3.0.0",
+    "@openzeppelin/contracts": "^4.7.2",
     "@truffle/hdwallet-provider": "^1.0.37",
     "dotenv": "^8.2.0",
     "truffle": "^5.1.32"