diff --git a/dictionaries/libraries.txt b/dictionaries/libraries.txt
index b59ff2b..a6c7d85 100644
--- a/dictionaries/libraries.txt
+++ b/dictionaries/libraries.txt
@@ -21,6 +21,7 @@ mulmod
 muln
 nbconvert
 nbformat
+nomicfoundation
 nomiclabs
 pygments
 pyplot
diff --git a/package.json b/package.json
index e2487e9..f5b7745 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,7 @@
     "ethereumjs-util": "^7.1.4"
   },
   "peerDependencies": {
+    "@nomicfoundation/hardhat-verify": "^1.1.1",
     "@nomiclabs/hardhat-ethers": "^2.0.4",
     "@openzeppelin/hardhat-upgrades": "^1.14.0",
     "@openzeppelin/upgrades-core": "^1.27.1",
diff --git a/src/upgrader.ts b/src/upgrader.ts
index ab1062b..72e64b9 100644
--- a/src/upgrader.ts
+++ b/src/upgrader.ts
@@ -96,7 +96,6 @@ export abstract class Upgrader {
                     implementationAddress: newImplementationAddress,
                     name: contract
                 });
-                await verify(contract, newImplementationAddress, []);
             } else {
                 console.log(chalk.gray(`Contract ${contract} is up to date`));
             }
@@ -120,6 +119,15 @@ export abstract class Upgrader {
 
         await this.submitter.submit(this.transactions);
 
+        if (process.env.NO_VERIFY) {
+            console.log("Skip verification");
+        } else {
+            console.log("Start verification");
+            for (const contract of contractsToUpgrade) {
+                await verify(contract.name, contract.implementationAddress, []);
+            }
+        }
+
         console.log("Done");
     }
 
diff --git a/src/verification.ts b/src/verification.ts
index a196e5e..ea39b6f 100644
--- a/src/verification.ts
+++ b/src/verification.ts
@@ -1,9 +1,11 @@
 import { ethers, run, network } from "hardhat";
+import { builtinChains } from "@nomicfoundation/hardhat-verify/internal/chain-config";
 import chalk from "chalk";
 import { getImplementationAddress } from "@openzeppelin/upgrades-core";
 
 export async function verify(contractName: string, contractAddress: string, constructorArguments: object) {
-    if (![1337, 31337].includes((await ethers.provider.getNetwork()).chainId)) {
+    const chainId = (await ethers.provider.getNetwork()).chainId;
+    if (builtinChains.find(chain => chain.chainId === chainId) !== undefined) {
         for (let retry = 0; retry <= 5; ++retry) {
             try {
                 await run("verify:verify", {
@@ -29,4 +31,4 @@ export async function verify(contractName: string, contractAddress: string, cons
 
 export async function verifyProxy(contractName: string, proxyAddress: string, constructorArguments: object) {
     await verify(contractName, await getImplementationAddress(network.provider, proxyAddress), constructorArguments);
-}
\ No newline at end of file
+}