diff --git a/package.json b/package.json
index 0e4da99..84d9ccc 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
     "author": "Operator Filterer <operatorfilterer@gmail.com>",
     "license": "MIT",
     "dependencies": {
-        "@openzeppelin/contracts": "^4.7.3",
+        "@openzeppelin/contracts": "^4.9.1",
         "@openzeppelin/contracts-upgradeable": "^4.8.2"
     },
     "files": [
diff --git a/yarn.lock b/yarn.lock
index ebafeed..fbee4fd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7,7 +7,7 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.8.2.tgz#edef522bdbc46d478481391553bababdd2199e27"
   integrity sha512-zIggnBwemUmmt9IS73qxi+tumALxCY4QEs3zLCII78k0Gfse2hAOdAkuAeLUzvWUpneMUfFE5sGHzEUSTvn4Ag==
 
-"@openzeppelin/contracts@^4.7.3":
-  version "4.7.3"
-  resolved "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.7.3.tgz"
-  integrity sha512-dGRS0agJzu8ybo44pCIf3xBaPQN/65AIXNgK8+4gzKd5kbvlqyxryUYVLJv7fK98Seyd2hDZzVEHSWAh0Bt1Yw==
+"@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==