diff --git a/package.json b/package.json
index 8a5f4b20..705d701c 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "web3modal": "^1.9.3"
   },
   "devDependencies": {
-    "@openzeppelin/contracts": "^3.0.0",
+    "@openzeppelin/contracts": "^3.4.2",
     "autoprefixer": "^7.1.2",
     "babel-core": "^6.22.1",
     "babel-eslint": "^8.2.1",
diff --git a/yarn.lock b/yarn.lock
index 16c6e3c3..deab1976 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -407,10 +407,10 @@
     "@ethersproject/properties" "^5.1.0"
     "@ethersproject/strings" "^5.1.0"
 
-"@openzeppelin/contracts@^3.0.0":
-  version "3.4.1"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.4.1.tgz#03c891fec7f93be0ae44ed74e57a122a38732ce7"
-  integrity sha512-cUriqMauq1ylzP2TxePNdPqkwI7Le3Annh4K9rrpvKfSBB/bdW+Iu1ihBaTIABTAAJ85LmKL5SSPPL9ry8d1gQ==
+"@openzeppelin/contracts@^3.4.2":
+  version "3.4.2"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.4.2.tgz#d81f786fda2871d1eb8a8c5a73e455753ba53527"
+  integrity sha512-z0zMCjyhhp4y7XKAcDAi3Vgms4T2PstwBdahiO0+9NaGICQKjynK3wduSRplTgk4LXmoO1yfDGO5RbjKYxtuxA==
 
 "@sindresorhus/is@^0.14.0":
   version "0.14.0"