diff --git a/package.json b/package.json
index 0a6a86e..134fbcd 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "hardhat": "^2.9.3"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^4.5.0",
+    "@openzeppelin/contracts": "^4.7.1",
     "dotenv": "^16.0.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 35df1e0..a081861 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -532,10 +532,10 @@
     "@types/sinon-chai" "^3.2.3"
     "@types/web3" "1.0.19"
 
-"@openzeppelin/contracts@^4.5.0":
-  version "4.5.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.5.0.tgz#3fd75d57de172b3743cdfc1206883f56430409cc"
-  integrity sha512-fdkzKPYMjrRiPK6K4y64e6GzULR7R7RwxSigHS8DDp7aWDeoReqsQI+cxHV1UuhAqX69L1lAaWDxenfP+xiqzA==
+"@openzeppelin/contracts@^4.7.1":
+  version "4.7.1"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.1.tgz#33d0a857b76b18d313e6bb6ed28cdaf367e90cfe"
+  integrity sha512-UXmAjKARsXORHlHZu5GCD7ZbRKm6nU8UHnbuT/QJJa2JEOEcbvV/X8w/sUk62Sl9VZuuljM1akrZLyAtzUgsxw==
 
 "@resolver-engine/core@^0.3.3":
   version "0.3.3"