diff --git a/packages/hardhat-ethers/package.json b/packages/hardhat-ethers/package.json
index 4aae16ef377..7a168eb857e 100644
--- a/packages/hardhat-ethers/package.json
+++ b/packages/hardhat-ethers/package.json
@@ -51,7 +51,7 @@
     "@types/lodash.isequal": "^4.5.6",
     "@types/mocha": ">=9.1.0",
     "@types/node": "^24.2.1",
-    "@types/sinon": "^9.0.8",
+    "@types/sinon": "^17.0.4",
     "@typescript-eslint/eslint-plugin": "8.34.1",
     "@typescript-eslint/parser": "8.32.1",
     "chai": "^4.2.0",