diff --git a/package.json b/package.json
index 6d4734e..39f393c 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
   },
   "devDependencies": {
     "@openzeppelin/contracts": "^4.8.2",
-    "@openzeppelin/contracts-upgradeable": "^4.8.2",
+    "@openzeppelin/contracts-upgradeable": "^4.9.1",
     "@truffle/hdwallet-provider": "2.1.9",
     "bootstrap": "4.2.1",
     "breakpoint-sass": "2.7.1",
diff --git a/yarn.lock b/yarn.lock
index 713ea14..708d58f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -772,10 +772,10 @@
   resolved "https://registry.yarnpkg.com/@noble/secp256k1/-/secp256k1-1.7.1.tgz#b251c70f824ce3ca7f8dc3df08d58f005cc0507c"
   integrity sha512-hOUk6AyBFmqVrv7k5WAw/LpszxVbj9gGN4JRkIX52fdFAj1UA61KXmZDvqVEm+pOyec3+fIeZB02LYa/pWOArw==
 
-"@openzeppelin/contracts-upgradeable@^4.8.2":
-  version "4.8.2"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.8.2.tgz#edef522bdbc46d478481391553bababdd2199e27"
-  integrity sha512-zIggnBwemUmmt9IS73qxi+tumALxCY4QEs3zLCII78k0Gfse2hAOdAkuAeLUzvWUpneMUfFE5sGHzEUSTvn4Ag==
+"@openzeppelin/contracts-upgradeable@^4.9.1":
+  version "4.9.1"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.9.1.tgz#03e33b8059ce43884995e69e4479f5a7f084b404"
+  integrity sha512-UZf5/VdaBA/0kxF7/gg+2UrC8k+fbgiUM0Qw1apAhwpBWBxULbsHw0ZRMgT53nd6N8hr53XFjhcWNeTRGIiCVw==
 
 "@openzeppelin/contracts@^4.8.2":
   version "4.8.2"