diff --git a/package.json b/package.json
index bcac669b7..a8c09660f 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
 	},
 	"dependencies": {
 		"@devprotocol/i-s-tokens": "2.0.1",
-		"@openzeppelin/contracts": "2.5.1"
+		"@openzeppelin/contracts": "4.7.3"
 	},
 	"directories": {
 		"doc": "docs",
diff --git a/yarn.lock b/yarn.lock
index 8d1a06680..25d7db4a2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1417,10 +1417,10 @@
     "@nodelib/fs.scandir" "2.1.5"
     fastq "^1.6.0"
 
-"@openzeppelin/contracts@2.5.1":
-  version "2.5.1"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-2.5.1.tgz#c76e3fc57aa224da3718ec351812a4251289db31"
-  integrity sha512-qIy6tLx8rtybEsIOAlrM4J/85s2q2nPkDqj/Rx46VakBZ0LwtFhXIVub96LXHczQX0vaqmAueDqNPXtbSXSaYQ==
+"@openzeppelin/contracts@4.7.3":
+  version "4.7.3"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.3.tgz#939534757a81f8d69cc854c7692805684ff3111e"
+  integrity sha512-dGRS0agJzu8ybo44pCIf3xBaPQN/65AIXNgK8+4gzKd5kbvlqyxryUYVLJv7fK98Seyd2hDZzVEHSWAh0Bt1Yw==
 
 "@protobufjs/aspromise@^1.1.1", "@protobufjs/aspromise@^1.1.2":
   version "1.1.2"