diff --git a/package.json b/package.json
index cc6024e..519cc28 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "eslint-config-ktsn-typescript": "^2.2.0",
     "jest": "^27.0.4",
     "npm-run-all": "^4.1.5",
-    "prettier": "2.3.0",
+    "prettier": "2.8.2",
     "prettier-config-ktsn": "^1.0.0",
     "rollup": "^2.50.6",
     "rollup-plugin-node-resolve": "^5.1.0",
diff --git a/yarn.lock b/yarn.lock
index b26e554..9b3caa5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3095,10 +3095,10 @@ prettier-config-ktsn@^1.0.0:
   resolved "https://registry.yarnpkg.com/prettier-config-ktsn/-/prettier-config-ktsn-1.0.0.tgz#1e79165e46c13c1d7c79537aafcc2ccf85b9118f"
   integrity sha512-z1W+wHGWnR3f0Tlq4PvD/3KrjXwaYRSJBj6m0QS0o7LazJR4BKPY1V7BsYQrFTrJrSxx2btyDEPO33NTTsFyfA==
 
-prettier@2.3.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.3.0.tgz#b6a5bf1284026ae640f17f7ff5658a7567fc0d18"
-  integrity sha512-kXtO4s0Lz/DW/IJ9QdWhAf7/NmPWQXkFr/r/WkR3vyI+0v8amTDxiaQSLzs8NBlytfLWX/7uQUMIW677yLKl4w==
+prettier@2.8.2:
+  version "2.8.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.2.tgz#c4ea1b5b454d7c4b59966db2e06ed7eec5dfd160"
+  integrity sha512-BtRV9BcncDyI2tsuS19zzhzoxD8Dh8LiCx7j7tHzrkz8GFXAexeWFdi22mjE1d16dftH2qNaytVxqiRTGlMfpw==
 
 pretty-format@^26.0.0, pretty-format@^26.6.2:
   version "26.6.2"