diff --git a/protocol/package.json b/protocol/package.json
index 616f09b..f00186f 100644
--- a/protocol/package.json
+++ b/protocol/package.json
@@ -6,7 +6,7 @@
   "license": "AGPL-3.0",
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.0",
-    "@nomiclabs/hardhat-etherscan": "^2.0.1",
+    "@nomiclabs/hardhat-etherscan": "^3.1.3",
     "@nomiclabs/hardhat-waffle": "^2.0.0",
     "@openzeppelin/contracts": "^3.2.0",
     "@typechain/ethers-v5": "^4.0.0",