diff --git a/blockchain/package.json b/blockchain/package.json
index 84f12437..4d05aa09 100644
--- a/blockchain/package.json
+++ b/blockchain/package.json
@@ -29,7 +29,7 @@
   "author": "Tribalyte Technologies",
   "license": "SEE LICENSE IN LICENSE.md",
   "dependencies": {
-    "@openzeppelin/contracts": "3.3.0",
+    "@openzeppelin/contracts": "4.7.2",
     "@openzeppelin/test-helpers": "0.5.9",
     "@openzeppelin/upgrades": "2.8.0",
     "@truffle/contract": "4.3.2",
diff --git a/blockchain/yarn.lock b/blockchain/yarn.lock
index 6d3c85d9..b7ea514d 100644
--- a/blockchain/yarn.lock
+++ b/blockchain/yarn.lock
@@ -237,10 +237,10 @@
     find-up "^4.1.0"
     fs-extra "^8.1.0"
 
-"@openzeppelin/contracts@3.3.0":
-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.3.0.tgz#ffdb693c5c349fc33bba420248dd3ac0a2d7c408"
-  integrity sha512-AemZEsQYtUp1WRkcmZm1div5ORfTpLquLaziCIrSagjxyKdmObxuaY1yjQ5SHFMctR8rLwp706NXTbiIRJg7pw==
+"@openzeppelin/contracts@4.7.2":
+  version "4.7.2"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.2.tgz#7587416fe2d35abf574193515b8971bfe9f64bc7"
+  integrity sha512-4n/JL9izql8303mPqPdubuna/DWEMbmOzWYUWyCPhjhiEr2w3nQrjE7vZz1fBF+wzzP6dZbIcsgqACk53c9FGA==
 
 "@openzeppelin/test-helpers@0.5.9":
   version "0.5.9"