diff --git a/package.json b/package.json
index 8107df2b..8b81754e 100644
--- a/package.json
+++ b/package.json
@@ -85,7 +85,7 @@
     "web3-utils": "^1.2.8"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^4.2.0",
+    "@openzeppelin/contracts": "^4.7.3",
     "crypto": "^1.0.1",
     "ethereumjs-wallet": "^0.6.3",
     "truffle": "5.4.5",
diff --git a/yarn.lock b/yarn.lock
index 51c073bb..85ef1312 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1246,10 +1246,10 @@
     find-up "^4.1.0"
     fs-extra "^8.1.0"
 
-"@openzeppelin/contracts@^4.2.0":
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.2.0.tgz#260d921d99356e48013d9d760caaa6cea35dc642"
-  integrity sha512-LD4NnkKpHHSMo5z9MvFsG4g1xxZUDqV3A3Futu3nvyfs4wPwXxqOgMaxOoa2PeyGL2VNeSlbxT54enbQzGcgJQ==
+"@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==
 
 "@openzeppelin/test-helpers@^0.5.6":
   version "0.5.9"