diff --git a/package.json b/package.json
index b414cd4..5607c16 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,6 @@
     "prettier-plugin-solidity": "^1.0.0-beta.17"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^3.4.2"
+    "@openzeppelin/contracts": "^4.7.2"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 4619e5c..052b396 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -508,10 +508,10 @@
     "@types/sinon-chai" "^3.2.3"
     "@types/web3" "1.0.19"
 
-"@openzeppelin/contracts@^3.4.2":
-  version "3.4.2"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.4.2.tgz#d81f786fda2871d1eb8a8c5a73e455753ba53527"
-  integrity sha512-z0zMCjyhhp4y7XKAcDAi3Vgms4T2PstwBdahiO0+9NaGICQKjynK3wduSRplTgk4LXmoO1yfDGO5RbjKYxtuxA==
+"@openzeppelin/contracts@^4.7.2":
+  version "4.7.2"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.2.tgz#7587416fe2d35abf574193515b8971bfe9f64bc7"
+  integrity sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA==
 
 "@resolver-engine/core@^0.3.3":
   version "0.3.3"