diff --git a/package.json b/package.json
index eb29737..4e19530 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
   },
   "homepage": "https://github.com/truffle-box/drizzle-box#readme",
   "dependencies": {
-    "@openzeppelin/contracts": "^2.4.0",
+    "@openzeppelin/contracts": "^4.0.0",
     "truffle": "^5.1.10",
     "@truffle/hdwallet-provider": "^1.0.29"
   }
diff --git a/yarn.lock b/yarn.lock
index b91bad9..2f1f8cd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -45,10 +45,10 @@
     lodash "^4.17.19"
     to-fast-properties "^2.0.0"
 
-"@openzeppelin/contracts@^2.4.0":
-  version "2.5.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-2.5.0.tgz#e327a98ba1d26b7756ff62885a0aa0967a375449"
-  integrity sha512-t3jm8FrhL9tkkJTofkznTqo/XXdHi21w5yXwalEnaMOp22ZwZ0f/mmKdlgMMLPFa6bSVHbY88mKESwJT/7m5Lg==
+"@openzeppelin/contracts@^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.0.0.tgz#54d1de30911635020c383cb73b160b698e7ae179"
+  integrity sha512-UcIJl/vUVjTr3H1yYXZi7Sr2PlXzBEHVUJKOUlVyzyy0FI8oQCCy0Wx+BuK/fojdnmLeMvUk4KUvhKUybP+C7Q==
 
 "@sindresorhus/is@^0.14.0":
   version "0.14.0"