diff --git a/contracts/package.json b/contracts/package.json
index 3f1dceb05..ae821f0b6 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -38,7 +38,7 @@
     "@kleros/kleros-v2-eslint-config": "workspace:^",
     "@kleros/kleros-v2-prettier-config": "workspace:^",
     "@kleros/kleros-v2-tsconfig": "workspace:^",
-    "@nomicfoundation/hardhat-chai-matchers": "^1.0.6",
+    "@nomicfoundation/hardhat-chai-matchers": "^2.0.0",
     "@nomiclabs/hardhat-ethers": "^2.2.3",
     "@nomiclabs/hardhat-solhint": "^3.0.1",
     "@openzeppelin/contracts": "^4.9.1",
diff --git a/yarn.lock b/yarn.lock
index 5e14130bf..743578342 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3782,7 +3782,7 @@ __metadata:
     "@kleros/kleros-v2-prettier-config": "workspace:^"
     "@kleros/kleros-v2-tsconfig": "workspace:^"
     "@kleros/vea-contracts": ^0.3.2
-    "@nomicfoundation/hardhat-chai-matchers": ^1.0.6
+    "@nomicfoundation/hardhat-chai-matchers": ^2.0.0
     "@nomiclabs/hardhat-ethers": ^2.2.3
     "@nomiclabs/hardhat-solhint": ^3.0.1
     "@openzeppelin/contracts": ^4.9.1
@@ -4542,21 +4542,20 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@nomicfoundation/hardhat-chai-matchers@npm:^1.0.6":
-  version: 1.0.6
-  resolution: "@nomicfoundation/hardhat-chai-matchers@npm:1.0.6"
+"@nomicfoundation/hardhat-chai-matchers@npm:^2.0.0":
+  version: 2.0.1
+  resolution: "@nomicfoundation/hardhat-chai-matchers@npm:2.0.1"
   dependencies:
-    "@ethersproject/abi": ^5.1.2
     "@types/chai-as-promised": ^7.1.3
     chai-as-promised: ^7.1.1
     deep-eql: ^4.0.1
     ordinal: ^1.0.3
   peerDependencies:
-    "@nomiclabs/hardhat-ethers": ^2.0.0
+    "@nomicfoundation/hardhat-ethers": ^3.0.0
     chai: ^4.2.0
-    ethers: ^5.0.0
+    ethers: ^6.1.0
     hardhat: ^2.9.4
-  checksum: c388e5ed9068f2ba7c227737ab7312dd03405d5fab195247b061f2fa52e700fbd0fb65359c2d4f2086f2905bfca642c19a9122d034533edd936f89aea65ac7f2
+  checksum: 53b517a7840ea93c25e0a8faaf947ccb6f942b514b53c07bc9f5a55d88e2c9743faf907d0020b3847d2196df7fd2d82ad60ce4354b7d7be7ebc3c0313d03d243
   languageName: node
   linkType: hard