diff --git a/package-lock.json b/package-lock.json
index b4136e7..1a06bab 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -930,9 +930,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-3.4.1.tgz",
-      "integrity": "sha512-cUriqMauq1ylzP2TxePNdPqkwI7Le3Annh4K9rrpvKfSBB/bdW+Iu1ihBaTIABTAAJ85LmKL5SSPPL9ry8d1gQ=="
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.4.2.tgz",
+      "integrity": "sha512-NyJV7sJgoGYqbtNUWgzzOGW4T6rR19FmX1IJgXGdapGPWsuMelGJn9h03nos0iqfforCbCB0iYIR0MtIuIFLLw=="
     },
     "@sentry/core": {
       "version": "5.30.0",
diff --git a/package.json b/package.json
index c800994..2e04423 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "test": "test"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "^3.4.1",
+    "@openzeppelin/contracts": "^4.4.2",
     "bitcoin-proof": "2.0.0",
     "bitcoinjs-lib": "^5.2.0",
     "js-sha256": "^0.9.0",