diff --git a/package.json b/package.json
index 8781c49e..cff064f7 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "husky": "7.0.1",
     "jest": "27.0.6",
     "lint-staged": "11.1.2",
-    "prettier": "2.3.2",
+    "prettier": "2.4.1",
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
     "rxjs": "7.3.0",
diff --git a/sample/01-hello-bot-app/package.json b/sample/01-hello-bot-app/package.json
index 0e5c2c09..c55d9e78 100644
--- a/sample/01-hello-bot-app/package.json
+++ b/sample/01-hello-bot-app/package.json
@@ -46,7 +46,7 @@
     "eslint-config-prettier": "8.3.0",
     "eslint-plugin-prettier": "4.0.0",
     "jest": "27.0.6",
-    "prettier": "2.3.2",
+    "prettier": "2.4.1",
     "supertest": "6.1.4",
     "ts-jest": "27.0.4",
     "ts-loader": "9.2.6",
diff --git a/sample/01-hello-bot-app/yarn.lock b/sample/01-hello-bot-app/yarn.lock
index 2623c9ca..12c49647 100644
--- a/sample/01-hello-bot-app/yarn.lock
+++ b/sample/01-hello-bot-app/yarn.lock
@@ -4439,10 +4439,10 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@2.3.2:
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.3.2.tgz#ef280a05ec253712e486233db5c6f23441e7342d"
-  integrity sha512-lnJzDfJ66zkMy58OL5/NY5zp70S7Nz6KqcKkXYzn2tMVrNxvbqaBpg7H3qHaLxCJ5lNMsGuM8+ohS7cZrthdLQ==
+prettier@2.4.1:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.4.1.tgz#671e11c89c14a4cfc876ce564106c4a6726c9f5c"
+  integrity sha512-9fbDAXSBcc6Bs1mZrDYb3XKzDLm4EXXL9sC1LqKP5rZkT6KRr/rf9amVUcODVXgguK/isJz0d0hP72WeaKWsvA==
 
 pretty-format@^26.0.0, pretty-format@^26.6.2:
   version "26.6.2"
diff --git a/yarn.lock b/yarn.lock
index 7114d05a..9021eed0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4303,10 +4303,10 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
-prettier@2.3.2:
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.3.2.tgz#ef280a05ec253712e486233db5c6f23441e7342d"
-  integrity sha512-lnJzDfJ66zkMy58OL5/NY5zp70S7Nz6KqcKkXYzn2tMVrNxvbqaBpg7H3qHaLxCJ5lNMsGuM8+ohS7cZrthdLQ==
+prettier@2.4.1:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.4.1.tgz#671e11c89c14a4cfc876ce564106c4a6726c9f5c"
+  integrity sha512-9fbDAXSBcc6Bs1mZrDYb3XKzDLm4EXXL9sC1LqKP5rZkT6KRr/rf9amVUcODVXgguK/isJz0d0hP72WeaKWsvA==
 
 pretty-format@^26.0.0, pretty-format@^26.6.2:
   version "26.6.2"