diff --git a/solidity/package-lock.json b/solidity/package-lock.json
index 4daa44d..b36e28e 100644
--- a/solidity/package-lock.json
+++ b/solidity/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==",
       "dev": true
     },
     "ansi-regex": {
diff --git a/solidity/package.json b/solidity/package.json
index cc81b4e..c774d1d 100644
--- a/solidity/package.json
+++ b/solidity/package.json
@@ -12,7 +12,7 @@
   "author": "SOFIE Project",
   "license": "APL 2.0",
   "devDependencies": {
-    "@openzeppelin/contracts": "^2.3.0",
+    "@openzeppelin/contracts": "^4.4.2",
     "ini": "^1.3.5",
     "mocha-junit-reporter": "^1.23.3",
     "mocha-multi-reporters": "^1.1.7",