diff --git a/package.json b/package.json
index 96065ce..f3c4d84 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "ethereum"
   ],
   "dependencies": {
-    "@openzeppelin/contracts": "4.9.0",
+    "@openzeppelin/contracts": "5.0.0",
     "@truffle/hdwallet-provider": "^2.0.0",
     "bignumber.js": "^9.0.0",
     "bluebird": "^3.3.5",
diff --git a/yarn.lock b/yarn.lock
index 0bfe00c..ee2d48f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1394,10 +1394,10 @@
     find-up "^4.1.0"
     fs-extra "^8.1.0"
 
-"@openzeppelin/contracts@4.9.0":
-  version "4.9.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.9.0.tgz#683f33b6598970051bc5f0806fd8660da9e018dd"
-  integrity sha512-DUP74AFGKlic2sQb/CmgrN2aUPMFGxRrmCTUxLHsiU2RzwWqVuMPZBxiAyvlff6Pea77uylAX6B5x9W6evEbhA==
+"@openzeppelin/contracts@5.0.0":
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-5.0.0.tgz#ee0e4b4564f101a5c4ee398cd4d73c0bd92b289c"
+  integrity sha512-bv2sdS6LKqVVMLI5+zqnNrNU/CA+6z6CmwFXm/MzmOPBRSO5reEJN7z0Gbzvs0/bv/MZZXNklubpwy3v2+azsw==
 
 "@openzeppelin/test-helpers@^0.5.15":
   version "0.5.15"