diff --git a/package.json b/package.json
index 63f0ec9..bfce273 100644
--- a/package.json
+++ b/package.json
@@ -77,7 +77,7 @@
     "@rollup/plugin-commonjs": "^25.0.0",
     "@rollup/plugin-node-resolve": "^15.0.1",
     "c8": "^9.0.0",
-    "chai": "^4.1.2",
+    "chai": "^5.1.0",
     "codecov": "^3.6.1",
     "es-check": "^7.0.0",
     "eslint": "^8.54.0",