diff --git a/hardhat/package-lock.json b/hardhat/package-lock.json
index 985f9f9..7ad9370 100644
--- a/hardhat/package-lock.json
+++ b/hardhat/package-lock.json
@@ -657,9 +657,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.2.0.tgz",
-      "integrity": "sha512-LD4NnkKpHHSMo5z9MvFsG4g1xxZUDqV3A3Futu3nvyfs4wPwXxqOgMaxOoa2PeyGL2VNeSlbxT54enbQzGcgJQ=="
+      "version": "4.9.3",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.9.3.tgz",
+      "integrity": "sha512-He3LieZ1pP2TNt5JbkPA4PNT9WC3gOTOlDcFGJW4Le4QKqwmiNJCRt44APfxMxvq7OugU/cqYuPcSBzOw38DAg=="
     },
     "@resolver-engine/core": {
       "version": "0.3.3",
diff --git a/hardhat/package.json b/hardhat/package.json
index 50b031d..ba28891 100644
--- a/hardhat/package.json
+++ b/hardhat/package.json
@@ -9,7 +9,7 @@
     "hardhat": "^2.4.3"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^4.2.0",
+    "@openzeppelin/contracts": "^4.9.3",
     "dotenv": "^10.0.0"
   },
   "scripts": {