diff --git a/package-lock.json b/package-lock.json
index 32738e3..4cb38a4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -975,9 +975,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-3.1.0.tgz",
-      "integrity": "sha512-dVXDnUKxrAKLzPdCRkz+N8qsVkK1XxJ6kk3zuI6zaQmcKxN7CkizoDP7lXxcs/Mi2I0mxceTRjJBqlzFffLJrQ==",
+      "version": "4.7.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.7.2.tgz",
+      "integrity": "sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA==",
       "dev": true
     },
     "@resolver-engine/core": {
diff --git a/package.json b/package.json
index d3c7371..5050caa 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "@nomiclabs/buidler-waffle": "2.0.0",
     "@nomiclabs/hardhat-ethers": "^2.0.0",
     "@nomiclabs/hardhat-waffle": "^2.0.0",
-    "@openzeppelin/contracts": "3.1.0",
+    "@openzeppelin/contracts": "4.7.2",
     "@tenderly/hardhat-tenderly": "^1.1.0-beta.3",
     "@typechain/ethers-v4": "1.0.0",
     "@typechain/ethers-v5": "^2.0.0",