diff --git a/solidity/package-lock.json b/solidity/package-lock.json
index f9313d3..51bcf61 100644
--- a/solidity/package-lock.json
+++ b/solidity/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "@openzeppelin/contracts": {
-      "version": "2.5.0",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-2.5.0.tgz",
-      "integrity": "sha512-t3jm8FrhL9tkkJTofkznTqo/XXdHi21w5yXwalEnaMOp22ZwZ0f/mmKdlgMMLPFa6bSVHbY88mKESwJT/7m5Lg==",
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.4.2.tgz",
+      "integrity": "sha512-NyJV7sJgoGYqbtNUWgzzOGW4T6rR19FmX1IJgXGdapGPWsuMelGJn9h03nos0iqfforCbCB0iYIR0MtIuIFLLw==",
       "dev": true
     },
     "@sindresorhus/is": {
diff --git a/solidity/package.json b/solidity/package.json
index c5d63e8..551e735 100644
--- a/solidity/package.json
+++ b/solidity/package.json
@@ -16,7 +16,7 @@
   "author": "SOFIE Project",
   "license": "APL 2.0",
   "devDependencies": {
-    "@openzeppelin/contracts": "^2.5.0",
+    "@openzeppelin/contracts": "^4.4.2",
     "ganache-cli": "^6.9.1",
     "ini": "^1.3.5",
     "mocha-junit-reporter": "^1.23.3",