diff --git a/packages/oauth/package.json b/packages/oauth/package.json
index 4f9002f06..231fd1c26 100644
--- a/packages/oauth/package.json
+++ b/packages/oauth/package.json
@@ -39,7 +39,7 @@
   },
   "devDependencies": {
     "@biomejs/biome": "^1.8.3",
-    "@types/chai": "^4",
+    "@types/chai": "^5",
     "@types/mocha": "^10",
     "@types/sinon": "^17",
     "c8": "^10.1.2",