diff --git a/contracts/package.json b/contracts/package.json
index d2eb5fc23..2e227d813 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -65,7 +65,7 @@
     "@kleros/kleros-v2-prettier-config": "workspace:^",
     "@kleros/kleros-v2-tsconfig": "workspace:^",
     "@logtail/pino": "^0.4.19",
-    "@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": "^5.0.2",
diff --git a/yarn.lock b/yarn.lock
index 6897e8531..2e9e660d8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6464,7 +6464,7 @@ __metadata:
     "@kleros/kleros-v2-tsconfig": "workspace:^"
     "@kleros/vea-contracts": "npm:^0.4.0"
     "@logtail/pino": "npm:^0.4.19"
-    "@nomicfoundation/hardhat-chai-matchers": "npm:^1.0.6"
+    "@nomicfoundation/hardhat-chai-matchers": "npm:^2.0.0"
     "@nomiclabs/hardhat-ethers": "npm:^2.2.3"
     "@nomiclabs/hardhat-solhint": "npm:^3.0.1"
     "@openzeppelin/contracts": "npm:^5.0.2"
@@ -8022,21 +8022,20 @@ __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: 2.0.7
+  resolution: "@nomicfoundation/hardhat-chai-matchers@npm:2.0.7"
   dependencies:
-    "@ethersproject/abi": "npm:^5.1.2"
     "@types/chai-as-promised": "npm:^7.1.3"
     chai-as-promised: "npm:^7.1.1"
     deep-eql: "npm:^4.0.1"
     ordinal: "npm:^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: a7d372c285df0a25cba3f3748773ccbe867dd08e6f7ed75e00a0e0cc8b55b4b0ff1af1da88168678c19eed2cdecda67bcadab7a2e98fed06bf4d0dd60af86438
+  checksum: 7bc8d6e5fce13d9672c4d49cc90f7ca94ada3c177eb85167e5258bdaf3acf493603512aac08658ac6eb5dc3fb7a3164183abaaa4798484bb79a7ec9db2b775bd
   languageName: node
   linkType: hard