diff --git a/package-lock.json b/package-lock.json
index c2537c4..4e3b881 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3713,9 +3713,9 @@
       }
     },
     "openzeppelin-solidity": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/openzeppelin-solidity/-/openzeppelin-solidity-2.2.0.tgz",
-      "integrity": "sha512-HfQq0xyT+EPs/lTWEd5Odu4T7CYdYe+qwf54EH28FQZthp4Bs6IWvOlOumTdS2dvpwZoTXURAopHn2LN1pwAGQ=="
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/openzeppelin-solidity/-/openzeppelin-solidity-2.5.1.tgz",
+      "integrity": "sha512-oCGtQPLOou4su76IMr4XXJavy9a8OZmAXeUZ8diOdFznlL/mlkIlYr7wajqCzH4S47nlKPS7m0+a2nilCTpVPQ=="
     },
     "original-require": {
       "version": "1.0.1",
diff --git a/package.json b/package.json
index 3ea458d..971bb7b 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "chai-as-promised": "^7.1.1",
     "commander": "^3.0.1",
     "nunjucks": "^3.2.0",
-    "openzeppelin-solidity": "2.2.0",
+    "openzeppelin-solidity": "2.5.1",
     "solidity-rlp": "^2.0.0",
     "truffle": "^5.0.34",
     "web3": "^1.2.4",