diff --git a/package-lock.json b/package-lock.json
index d16844d..45fda5b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "@nomiclabs/hardhat-ethers": "^2.2.1",
         "@nomiclabs/hardhat-etherscan": "^3.1.0",
         "@nomiclabs/hardhat-waffle": "^2.0.5",
-        "@openzeppelin/contracts": "^4.7.3",
+        "@openzeppelin/contracts": "^4.9.1",
         "@openzeppelin/contracts-upgradeable": "^4.8.2",
         "@openzeppelin/hardhat-upgrades": "^1.21.0",
         "@typechain/ethers-v5": "^7.2.0",
@@ -1990,9 +1990,9 @@
       }
     },
     "node_modules/@openzeppelin/contracts": {
-      "version": "4.8.2",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.8.2.tgz",
-      "integrity": "sha512-kEUOgPQszC0fSYWpbh2kT94ltOJwj1qfT2DWo+zVttmGmf97JZ99LspePNaeeaLhCImaHVeBbjaQFZQn7+Zc5g==",
+      "version": "4.9.1",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.9.1.tgz",
+      "integrity": "sha512-aLDTLu/If1qYIFW5g4ZibuQaUsFGWQPBq1mZKp/txaebUnGHDmmiBhRLY1tDNedN0m+fJtKZ1zAODS9Yk+V6uA==",
       "dev": true
     },
     "node_modules/@openzeppelin/contracts-upgradeable": {
@@ -2425,6 +2425,7 @@
       "integrity": "sha512-bdM5cEGCOhDSwminryHJbRmXc1x7dPKg6Pqns3qyTwFlxsqUgxE29lsERS3PlIW1HTjoIGMUqsk1zQQwST1Yxw==",
       "dev": true,
       "hasInstallScript": true,
+      "optional": true,
       "dependencies": {
         "node-gyp-build": "4.3.0"
       },
diff --git a/package.json b/package.json
index 07f44a2..dbf48f2 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "@nomiclabs/hardhat-ethers": "^2.2.1",
     "@nomiclabs/hardhat-etherscan": "^3.1.0",
     "@nomiclabs/hardhat-waffle": "^2.0.5",
-    "@openzeppelin/contracts": "^4.7.3",
+    "@openzeppelin/contracts": "^4.9.1",
     "@openzeppelin/contracts-upgradeable": "^4.8.2",
     "@openzeppelin/hardhat-upgrades": "^1.21.0",
     "@typechain/ethers-v5": "^7.2.0",