diff --git a/package.json b/package.json
index 5fb2e26..0c30b77 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "@nomiclabs/hardhat-ethers": "^2.0.2",
     "@nomiclabs/hardhat-etherscan": "^2.1.7",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
-    "@openzeppelin/contracts": "^4.4.2",
+    "@openzeppelin/contracts": "^4.7.2",
     "@polkadot/keyring": "5.9.2",
     "@polkadot/util": "5.9.2",
     "@types/node": "^16.7.13",
diff --git a/yarn.lock b/yarn.lock
index 873688b..1c7ab7e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -685,10 +685,10 @@
     "@types/sinon-chai" "^3.2.3"
     "@types/web3" "1.0.19"
 
-"@openzeppelin/contracts@^4.4.2":
-  version "4.5.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.5.0.tgz#3fd75d57de172b3743cdfc1206883f56430409cc"
-  integrity sha512-fdkzKPYMjrRiPK6K4y64e6GzULR7R7RwxSigHS8DDp7aWDeoReqsQI+cxHV1UuhAqX69L1lAaWDxenfP+xiqzA==
+"@openzeppelin/contracts@^4.7.2":
+  version "4.7.2"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.2.tgz#7587416fe2d35abf574193515b8971bfe9f64bc7"
+  integrity sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA==
 
 "@polkadot/api-augment@7.15.1":
   version "7.15.1"