diff --git a/package-lock.json b/package-lock.json
index f37f438..5311106 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
-        "@openzeppelin/contracts": "^4.2.0",
+        "@openzeppelin/contracts": "^4.7.2",
         "@truffle/hdwallet-provider": "^1.5.1-alpha.0",
         "ganache-cli": "^6.12.2",
         "openzeppelin-solidity": "^4.2.0",
@@ -3709,9 +3709,9 @@
       }
     },
     "node_modules/@openzeppelin/contracts": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.2.0.tgz",
-      "integrity": "sha512-LD4NnkKpHHSMo5z9MvFsG4g1xxZUDqV3A3Futu3nvyfs4wPwXxqOgMaxOoa2PeyGL2VNeSlbxT54enbQzGcgJQ=="
+      "version": "4.7.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.7.2.tgz",
+      "integrity": "sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA=="
     },
     "node_modules/@protobufjs/aspromise": {
       "version": "1.1.2",
@@ -27171,9 +27171,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.2.0.tgz",
-      "integrity": "sha512-LD4NnkKpHHSMo5z9MvFsG4g1xxZUDqV3A3Futu3nvyfs4wPwXxqOgMaxOoa2PeyGL2VNeSlbxT54enbQzGcgJQ=="
+      "version": "4.7.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.7.2.tgz",
+      "integrity": "sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA=="
     },
     "@protobufjs/aspromise": {
       "version": "1.1.2",
diff --git a/package.json b/package.json
index 6df14d2..3218af3 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "test": "test"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^4.2.0",
+    "@openzeppelin/contracts": "^4.7.2",
     "@truffle/hdwallet-provider": "^1.5.1-alpha.0",
     "ganache-cli": "^6.12.2",
     "openzeppelin-solidity": "^4.2.0",