diff --git a/package-lock.json b/package-lock.json
index f72deb8..05b66a9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -715,9 +715,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "3.4.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-3.4.0.tgz",
-      "integrity": "sha512-qh+EiHWzfY/9CORr+eRUkeEUP1WiFUcq3974bLHwyYzLBUtK6HPaMkIUHi74S1rDTZ0sNz42DwPc5A4IJvN3rg=="
+      "version": "4.8.3",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.8.3.tgz",
+      "integrity": "sha512-bQHV8R9Me8IaJoJ2vPG4rXcL7seB7YVuskr4f+f5RyOStSZetwzkWtoqDMl5erkBJy0lDRUnIR2WIkPiC0GJlg=="
     },
     "@resolver-engine/core": {
       "version": "0.3.3",
diff --git a/package.json b/package.json
index 2243d34..d3e4ac4 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,6 @@
     "hardhat": "^2.0.8"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "3.4.0"
+    "@openzeppelin/contracts": "4.8.3"
   }
 }