diff --git a/package-lock.json b/package-lock.json
index f02390b..95fea44 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,9 +14,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-2.3.0.tgz",
-      "integrity": "sha512-lf8C3oULQAnsu3OTRP4tP5/ddfil6l65Lg3JQCwAIgc99vZ1jz5qeBoETGGGmczxt+bIyMI06WPP2apC74EZag=="
+      "version": "4.7.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.7.2.tgz",
+      "integrity": "sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA=="
     },
     "@sindresorhus/is": {
       "version": "0.14.0",
diff --git a/package.json b/package.json
index 998b10d..cac8b6c 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "solhint-plugin-prettier": "0.0.3"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^2.3.0",
+    "@openzeppelin/contracts": "^4.7.2",
     "@truffle/config": "^1.2.3",
     "babel-polyfill": "^6.26.0",
     "babel-register": "^6.26.0",