diff --git a/ChallengeContracts/package-lock.json b/ChallengeContracts/package-lock.json
index f73c637..a9a06bb 100644
--- a/ChallengeContracts/package-lock.json
+++ b/ChallengeContracts/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "@openzeppelin/contracts": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-2.3.0.tgz",
-      "integrity": "sha512-lf8C3oULQAnsu3OTRP4tP5/ddfil6l65Lg3JQCwAIgc99vZ1jz5qeBoETGGGmczxt+bIyMI06WPP2apC74EZag=="
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.4.2.tgz",
+      "integrity": "sha512-NyJV7sJgoGYqbtNUWgzzOGW4T6rR19FmX1IJgXGdapGPWsuMelGJn9h03nos0iqfforCbCB0iYIR0MtIuIFLLw=="
     },
     "@sindresorhus/is": {
       "version": "0.14.0",
diff --git a/ChallengeContracts/package.json b/ChallengeContracts/package.json
index 9037607..7aea58e 100644
--- a/ChallengeContracts/package.json
+++ b/ChallengeContracts/package.json
@@ -15,7 +15,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@openzeppelin/contracts": "^2.3.0",
+    "@openzeppelin/contracts": "^4.4.2",
     "drizzle": "^1.4.0",
     "truffle": "^5.0.30",
     "truffle-hdwallet-provider": "^1.0.16"