diff --git a/package.json b/package.json
index 6fb3749..36d79f1 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "@nomiclabs/hardhat-ethers": "^2.0.0",
     "@nomiclabs/hardhat-etherscan": "^2.1.0",
     "@nomiclabs/hardhat-waffle": "^2.0.0",
-    "@openzeppelin/contracts": "^3.3.0-solc-0.7",
+    "@openzeppelin/contracts": "^4.4.1",
     "@typechain/ethers-v5": "^2.0.0",
     "@types/chai": "^4.2.13",
     "@types/fs-extra": "^9.0.1",
diff --git a/yarn.lock b/yarn.lock
index d7227d9..346e784 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -699,10 +699,10 @@
     "@types/sinon-chai" "^3.2.3"
     "@types/web3" "1.0.19"
 
-"@openzeppelin/contracts@^3.3.0-solc-0.7":
-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.3.0.tgz#ffdb693c5c349fc33bba420248dd3ac0a2d7c408"
-  integrity sha512-AemZEsQYtUp1WRkcmZm1div5ORfTpLquLaziCIrSagjxyKdmObxuaY1yjQ5SHFMctR8rLwp706NXTbiIRJg7pw==
+"@openzeppelin/contracts@^4.4.1":
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.4.1.tgz#3382db2cd83ab565ed9626765e7da92944b45de8"
+  integrity sha512-o+pHCf/yMLSlV5MkDQEzEQL402i6SoRnktru+0rdSxVEFZcTzzGhZCAtZjUFyKGazMSv1TilzMg+RbED1N8XHQ==
 
 "@resolver-engine/core@^0.3.3":
   version "0.3.3"