diff --git a/package-lock.json b/package-lock.json
index 4608c0d9a89..deb50141cd5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2133,9 +2133,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-3.2.0.tgz",
-      "integrity": "sha512-bUOmkSoPkjnUyMiKo6RYnb0VHBk5D9KKDAgNLzF41aqAM3TeE0yGdFF5dVRcV60pZdJLlyFT/jjXIZCWyyEzAQ=="
+      "version": "4.7.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.7.2.tgz",
+      "integrity": "sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA=="
     },
     "@openzeppelin/docs-utils": {
       "version": "0.1.0",
diff --git a/package.json b/package.json
index 336a166af0d..2789da1b820 100644
--- a/package.json
+++ b/package.json
@@ -84,7 +84,7 @@
     "web3": "^1.3.0"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^3.2.0",
+    "@openzeppelin/contracts": "^4.7.2",
     "@uniswap/lib": "^2.1.0",
     "@uniswap/v2-core": "^1.0.1",
     "buidler-source-descriptor": "0.0.15-rc"