diff --git a/package.json b/package.json
index bcc32c9..59f282a 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
         "url": "https://github.com/dharma-eng/dharma-token.git"
     },
     "dependencies": {
-        "@openzeppelin/contracts": "2.3.0",
+        "@openzeppelin/contracts": "4.7.2",
         "ethereumjs-util": "6.1.0",
         "ethlint": "1.2.5",
         "ganache-cli": "git://github.com/dharma-eng/ganache-cli",
diff --git a/yarn.lock b/yarn.lock
index b9cce0e..b5da9c2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -46,10 +46,10 @@
     "@nodelib/fs.scandir" "2.1.3"
     fastq "^1.6.0"
 
-"@openzeppelin/contracts@2.3.0":
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-2.3.0.tgz#043961a6e37b87e0eb80647c7528a7c62c41361f"
-  integrity sha512-lf8C3oULQAnsu3OTRP4tP5/ddfil6l65Lg3JQCwAIgc99vZ1jz5qeBoETGGGmczxt+bIyMI06WPP2apC74EZag==
+"@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==
 
 "@samverschueren/stream-to-observable@^0.3.0":
   version "0.3.0"