diff --git a/package.json b/package.json
index 2b77050..22850be 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "private": true,
   "dependencies": {
-    "@openzeppelin/contracts": "^3.0.1",
+    "@openzeppelin/contracts": "^4.7.2",
     "@openzeppelin/test-helpers": "https://github.com/OpenZeppelin/openzeppelin-test-helpers",
     "cdpsaver-contracts": "https://github.com/DecenterApps/defisaver-contracts",
     "truffle": "^5.1.26"
diff --git a/yarn.lock b/yarn.lock
index c807528..b8f754c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -143,6 +143,11 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.0.1.tgz#2f327f77d16b43f14674086b2b634bda38cb0838"
   integrity sha512-uSrD7hZ0ViuHGqHZbeHawZBi/uy7aBiNramXAt2dFFuSuoU4u9insS3V3zdVfOnYSPreUo636xSOuQIFN4//HA==
 
+"@openzeppelin/contracts@^4.7.2":
+  version "4.7.2"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.2.tgz#7587416fe2d35abf574193515b8971bfe9f64bc7"
+  integrity sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA==
+
 "@openzeppelin/test-helpers@https://github.com/OpenZeppelin/openzeppelin-test-helpers":
   version "0.5.5"
   resolved "https://github.com/OpenZeppelin/openzeppelin-test-helpers#9691c8c664a016fd41c449d02f53232f27692033"