diff --git a/package-lock.json b/package-lock.json
index dff63e9..0598f35 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,17 +1,17 @@
 {
   "name": "ptokens-router-contract",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "ptokens-router-contract",
-      "version": "2.2.0",
+      "version": "2.2.1",
       "license": "MIT",
       "dependencies": {
         "@nomiclabs/hardhat-etherscan": "^3.1.7",
         "@nomiclabs/hardhat-waffle": "^2.0.1",
-        "@openzeppelin/contracts": "^4.3.2",
+        "@openzeppelin/contracts": "^4.9.3",
         "@openzeppelin/contracts-upgradeable": "^4.3.2",
         "@pnetwork-association/ptokens-utils": "^3.2.2",
         "docopt": "^0.6.2",
@@ -1447,9 +1447,9 @@
       }
     },
     "node_modules/@openzeppelin/contracts": {
-      "version": "4.3.2",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.3.2.tgz",
-      "integrity": "sha512-AybF1cesONZStg5kWf6ao9OlqTZuPqddvprc0ky7lrUVOjXeKpmQ2Y9FK+6ygxasb+4aic4O5pneFBfwVsRRRg=="
+      "version": "4.9.3",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.9.3.tgz",
+      "integrity": "sha512-He3LieZ1pP2TNt5JbkPA4PNT9WC3gOTOlDcFGJW4Le4QKqwmiNJCRt44APfxMxvq7OugU/cqYuPcSBzOw38DAg=="
     },
     "node_modules/@openzeppelin/contracts-upgradeable": {
       "version": "4.3.2",
@@ -18561,9 +18561,9 @@
       }
     },
     "@openzeppelin/contracts": {
-      "version": "4.3.2",
-      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.3.2.tgz",
-      "integrity": "sha512-AybF1cesONZStg5kWf6ao9OlqTZuPqddvprc0ky7lrUVOjXeKpmQ2Y9FK+6ygxasb+4aic4O5pneFBfwVsRRRg=="
+      "version": "4.9.3",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.9.3.tgz",
+      "integrity": "sha512-He3LieZ1pP2TNt5JbkPA4PNT9WC3gOTOlDcFGJW4Le4QKqwmiNJCRt44APfxMxvq7OugU/cqYuPcSBzOw38DAg=="
     },
     "@openzeppelin/contracts-upgradeable": {
       "version": "4.3.2",
diff --git a/package.json b/package.json
index 65ac1a9..8ae269d 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   "dependencies": {
     "@nomiclabs/hardhat-etherscan": "^3.1.7",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
-    "@openzeppelin/contracts": "^4.3.2",
+    "@openzeppelin/contracts": "^4.9.3",
     "@openzeppelin/contracts-upgradeable": "^4.3.2",
     "docopt": "^0.6.2",
     "dotenv": "^10.0.0",