diff --git a/package.json b/package.json
index 2b079906..5d2a8932 100644
--- a/package.json
+++ b/package.json
@@ -221,7 +221,7 @@
     "@nomicfoundation/hardhat-ethers": "^3.1.0",
     "@nomicfoundation/hardhat-network-helpers": "^1.1.0",
     "@nomicfoundation/hardhat-verify": "^2.1.0",
-    "@openzeppelin/contracts": "^4.9.6",
+    "@openzeppelin/contracts": "^5.4.0",
     "@typechain/ethers-v6": "^0.5.1",
     "@typechain/hardhat": "^9.1.0",
     "@types/chai": "^4.3.20",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index cd62fe8b..1f9e3dc8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -36,8 +36,8 @@ importers:
         specifier: ^2.1.0
         version: 2.1.0(hardhat@2.26.0(ts-node@10.9.2(@types/node@24.0.15)(typescript@5.8.3))(typescript@5.8.3))
       '@openzeppelin/contracts':
-        specifier: ^4.9.6
-        version: 4.9.6
+        specifier: ^5.4.0
+        version: 5.4.0
       '@typechain/ethers-v6':
         specifier: ^0.5.1
         version: 0.5.1(ethers@6.15.0)(typechain@8.3.2(typescript@5.8.3))(typescript@5.8.3)
@@ -715,8 +715,8 @@ packages:
     peerDependencies:
       '@opentelemetry/api': ^1.1.0
 
-  '@openzeppelin/contracts@4.9.6':
-    resolution: {integrity: sha512-xSmezSupL+y9VkHZJGDoCBpmnB2ogM13ccaYDWqJTfS3dbuHkgjuwDFUmaFauBCboQMGB/S5UqUl2y54X99BmA==}
+  '@openzeppelin/contracts@5.4.0':
+    resolution: {integrity: sha512-eCYgWnLg6WO+X52I16TZt8uEjbtdkgLC0SUX/xnAksjjrQI4Xfn4iBRoI5j55dmlOhDv1Y7BoR3cU7e3WWhC6A==}
 
   '@pkgjs/parseargs@0.11.0':
     resolution: {integrity: sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==}
@@ -4104,7 +4104,7 @@ snapshots:
       '@opentelemetry/api': 1.9.0
       '@opentelemetry/core': 1.30.1(@opentelemetry/api@1.9.0)
 
-  '@openzeppelin/contracts@4.9.6': {}
+  '@openzeppelin/contracts@5.4.0': {}
 
   '@pkgjs/parseargs@0.11.0':
     optional: true