diff --git a/package.json b/package.json
index d0b32d4..968f1e0 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "sharedb": "^1.0.0 || ^2.0.0 || ^3.0.0 || ^4.0.0 || ^5.0.0 || ^6.0.0"
   },
   "devDependencies": {
-    "chai": "^4.2.0",
+    "chai": "^6.2.2",
     "coveralls": "^3.0.7",
     "eslint": "^7.23.0",
     "eslint-config-google": "^0.14.0",