diff --git a/package.json b/package.json
index d30dcc6..d0cf8d3 100644
--- a/package.json
+++ b/package.json
@@ -39,8 +39,8 @@
     "store": "~2.0.12"
   },
   "devDependencies": {
-    "c8": "^8.0.1",
-    "esbuild": "^0.19.10",
+    "c8": "^9.0.0",
+    "esbuild": "^0.19.11",
     "eslint": "^8.56.0",
     "http-server": "^14.1.1",
     "node-localstorage": "^3.0.5",