diff --git a/package.json b/package.json
index 6d4734e..7bf6873 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "**/graphql": "^16.6.0"
   },
   "devDependencies": {
-    "@openzeppelin/contracts": "^4.8.2",
+    "@openzeppelin/contracts": "^4.9.1",
     "@openzeppelin/contracts-upgradeable": "^4.8.2",
     "@truffle/hdwallet-provider": "2.1.9",
     "bootstrap": "4.2.1",
diff --git a/yarn.lock b/yarn.lock
index 713ea14..28e6f28 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -777,10 +777,10 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.8.2.tgz#edef522bdbc46d478481391553bababdd2199e27"
   integrity sha512-zIggnBwemUmmt9IS73qxi+tumALxCY4QEs3zLCII78k0Gfse2hAOdAkuAeLUzvWUpneMUfFE5sGHzEUSTvn4Ag==
 
-"@openzeppelin/contracts@^4.8.2":
-  version "4.8.2"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.8.2.tgz#d815ade0027b50beb9bcca67143c6bcc3e3923d6"
-  integrity sha512-kEUOgPQszC0fSYWpbh2kT94ltOJwj1qfT2DWo+zVttmGmf97JZ99LspePNaeeaLhCImaHVeBbjaQFZQn7+Zc5g==
+"@openzeppelin/contracts@^4.9.1":
+  version "4.9.1"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.9.1.tgz#afa804d2c68398704b0175acc94d91a54f203645"
+  integrity sha512-aLDTLu/If1qYIFW5g4ZibuQaUsFGWQPBq1mZKp/txaebUnGHDmmiBhRLY1tDNedN0m+fJtKZ1zAODS9Yk+V6uA==
 
 "@protobufjs/aspromise@^1.1.1", "@protobufjs/aspromise@^1.1.2":
   version "1.1.2"