diff --git a/package-lock.json b/package-lock.json
index 629ea79..8ce7733 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,7 +29,7 @@
         "eslint-plugin-prettier": "3.4.0",
         "husky": "6.0.0",
         "lint-staged": "11.0.0",
-        "prettier": "2.3.0",
+        "prettier": "2.3.1",
         "reflect-metadata": "0.1.13",
         "rxjs": "6.6.7",
         "telegraf": "4.3.0",
@@ -3475,9 +3475,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.3.0.tgz",
-      "integrity": "sha512-kXtO4s0Lz/DW/IJ9QdWhAf7/NmPWQXkFr/r/WkR3vyI+0v8amTDxiaQSLzs8NBlytfLWX/7uQUMIW677yLKl4w==",
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.3.1.tgz",
+      "integrity": "sha512-p+vNbgpLjif/+D+DwAZAbndtRrR0md0MwfmOVN9N+2RgyACMT+7tfaRnT+WDPkqnuVwleyuBIG2XBxKDme3hPA==",
       "dev": true,
       "bin": {
         "prettier": "bin-prettier.js"
@@ -7241,9 +7241,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.3.0.tgz",
-      "integrity": "sha512-kXtO4s0Lz/DW/IJ9QdWhAf7/NmPWQXkFr/r/WkR3vyI+0v8amTDxiaQSLzs8NBlytfLWX/7uQUMIW677yLKl4w==",
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.3.1.tgz",
+      "integrity": "sha512-p+vNbgpLjif/+D+DwAZAbndtRrR0md0MwfmOVN9N+2RgyACMT+7tfaRnT+WDPkqnuVwleyuBIG2XBxKDme3hPA==",
       "dev": true
     },
     "prettier-linter-helpers": {
diff --git a/package.json b/package.json
index f7da809..4783bfb 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "eslint-plugin-prettier": "3.4.0",
     "husky": "6.0.0",
     "lint-staged": "11.0.0",
-    "prettier": "2.3.0",
+    "prettier": "2.3.1",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.6.7",
     "telegraf": "4.3.0",
diff --git a/sample/01-complete-app/package-lock.json b/sample/01-complete-app/package-lock.json
index 7ef9378..73b7a88 100644
--- a/sample/01-complete-app/package-lock.json
+++ b/sample/01-complete-app/package-lock.json
@@ -33,7 +33,7 @@
         "eslint-config-prettier": "8.3.0",
         "eslint-plugin-prettier": "3.4.0",
         "jest": "26.6.3",
-        "prettier": "2.3.0",
+        "prettier": "2.3.1",
         "supertest": "6.1.3",
         "ts-jest": "26.5.6",
         "ts-loader": "9.2.2",
@@ -9680,9 +9680,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.3.0.tgz",
-      "integrity": "sha512-kXtO4s0Lz/DW/IJ9QdWhAf7/NmPWQXkFr/r/WkR3vyI+0v8amTDxiaQSLzs8NBlytfLWX/7uQUMIW677yLKl4w==",
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.3.1.tgz",
+      "integrity": "sha512-p+vNbgpLjif/+D+DwAZAbndtRrR0md0MwfmOVN9N+2RgyACMT+7tfaRnT+WDPkqnuVwleyuBIG2XBxKDme3hPA==",
       "dev": true,
       "bin": {
         "prettier": "bin-prettier.js"
@@ -20241,9 +20241,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.3.0.tgz",
-      "integrity": "sha512-kXtO4s0Lz/DW/IJ9QdWhAf7/NmPWQXkFr/r/WkR3vyI+0v8amTDxiaQSLzs8NBlytfLWX/7uQUMIW677yLKl4w==",
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.3.1.tgz",
+      "integrity": "sha512-p+vNbgpLjif/+D+DwAZAbndtRrR0md0MwfmOVN9N+2RgyACMT+7tfaRnT+WDPkqnuVwleyuBIG2XBxKDme3hPA==",
       "dev": true
     },
     "prettier-linter-helpers": {
diff --git a/sample/01-complete-app/package.json b/sample/01-complete-app/package.json
index f52533d..d7d03db 100644
--- a/sample/01-complete-app/package.json
+++ b/sample/01-complete-app/package.json
@@ -44,7 +44,7 @@
     "eslint-config-prettier": "8.3.0",
     "eslint-plugin-prettier": "3.4.0",
     "jest": "26.6.3",
-    "prettier": "2.3.0",
+    "prettier": "2.3.1",
     "supertest": "6.1.3",
     "ts-jest": "26.5.6",
     "ts-loader": "9.2.2",