diff --git a/package.json b/package.json
index d4a7560..b28923f 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.2",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
-    "@openzeppelin/contracts": "^4.5.0",
+    "@openzeppelin/contracts": "^4.7.3",
     "@typechain/ethers-v5": "^9.0.0",
     "@typechain/hardhat": "^5.0.0",
     "@types/chai": "^4.3.0",
diff --git a/yarn.lock b/yarn.lock
index bff50f8..5f14292 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -683,10 +683,10 @@
     "@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@^4.7.3":
+  version "4.7.3"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.3.tgz#939534757a81f8d69cc854c7692805684ff3111e"
+  integrity sha512-dGRS0agJzu8ybo44pCIf3xBaPQN/65AIXNgK8+4gzKd5kbvlqyxryUYVLJv7fK98Seyd2hDZzVEHSWAh0Bt1Yw==
 
 "@resolver-engine/core@^0.3.3":
   version "0.3.3"