diff --git a/package.json b/package.json
index a362bb1..9e5e0e9 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers",
     "@nomiclabs/hardhat-etherscan": "^2.1.6",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
-    "@openzeppelin/contracts": "^4.4.0",
+    "@openzeppelin/contracts": "^4.7.1",
     "@openzeppelin/contracts-upgradeable": "^4.4.0",
     "@openzeppelin/test-helpers": "^0.5.13",
     "@tenderly/hardhat-tenderly": "^1.0.12",
diff --git a/yarn.lock b/yarn.lock
index cee1965..4915fe9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -707,10 +707,10 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.4.1.tgz#5d2c0e82cc1f94ee38a27572217ef103d5c3d0ef"
   integrity sha512-84dUN+TBY42D52BzUc4RHxU4KORs8Ys7dj3nH0WX1QKtlS6rrN45gL+sxaotkPdCqFLVLPyj+kd8GfJ4puxVjA==
 
-"@openzeppelin/contracts@^4.4.0":
-  version "4.4.1"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.4.1.tgz#3382db2cd83ab565ed9626765e7da92944b45de8"
-  integrity sha512-o+pHCf/yMLSlV5MkDQEzEQL402i6SoRnktru+0rdSxVEFZcTzzGhZCAtZjUFyKGazMSv1TilzMg+RbED1N8XHQ==
+"@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==
 
 "@openzeppelin/test-helpers@^0.5.13":
   version "0.5.15"
@@ -4607,17 +4607,6 @@ ethereumjs-util@^7.0.10, ethereumjs-util@^7.0.2, ethereumjs-util@^7.1.0, ethereu
     ethjs-util "0.1.6"
     rlp "^2.2.4"
 
-ethereumjs-util@^7.1.1, ethereumjs-util@^7.1.2, ethereumjs-util@^7.1.3:
-  version "7.1.3"
-  resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-7.1.3.tgz#b55d7b64dde3e3e45749e4c41288238edec32d23"
-  integrity sha512-y+82tEbyASO0K0X1/SRhbJJoAlfcvq8JbrG4a5cjrOks7HS/36efU/0j2flxCPOUM++HFahk33kr/ZxyC4vNuw==
-  dependencies:
-    "@types/bn.js" "^5.1.0"
-    bn.js "^5.1.2"
-    create-hash "^1.1.2"
-    ethereum-cryptography "^0.1.3"
-    rlp "^2.2.4"
-
 ethereumjs-vm@4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/ethereumjs-vm/-/ethereumjs-vm-4.2.0.tgz#e885e861424e373dbc556278f7259ff3fca5edab"