diff --git a/package.json b/package.json
index 3011df8..4c7d74b 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   "author": "Cat Chen <catchen@catchen.me>",
   "license": "MIT",
   "devDependencies": {
-    "ajv": "^8.8.2",
+    "ajv": "^8.9.0",
     "typescript": "^4.5.4"
   },
   "scripts": {
diff --git a/yarn.lock b/yarn.lock
index 7d642f4..c89b4c1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,10 +2,10 @@
 # yarn lockfile v1
 
 
-ajv@^8.8.2:
-  version "8.8.2"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-8.8.2.tgz#01b4fef2007a28bf75f0b7fc009f62679de4abbb"
-  integrity sha512-x9VuX+R/jcFj1DHo/fCp99esgGDWiHENrKxaCENuCxpoMCmAt/COCGVDwA7kleEpEzJjDnvh3yGoOuLu0Dtllw==
+ajv@^8.9.0:
+  version "8.9.0"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-8.9.0.tgz#738019146638824dea25edcf299dcba1b0e7eb18"
+  integrity sha512-qOKJyNj/h+OWx7s5DePL6Zu1KeM9jPZhwBqs+7DzP6bGOvqzVCSf0xueYmVuaC/oQ/VtS2zLMLHdQFbkka+XDQ==
   dependencies:
     fast-deep-equal "^3.1.1"
     json-schema-traverse "^1.0.0"