diff --git a/package-lock.json b/package-lock.json
index c08e4b0..5bd056b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3179,6 +3179,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -4209,7 +4210,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "loose-envify": {
           "version": "1.3.1",
@@ -5729,9 +5731,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "1.13.3",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.13.3.tgz",
-      "integrity": "sha512-CIWJNU+cFFdeA0GJSzzFkxiq2WuMvWZMlz6cV/EXhPlRnI3esSFMh+lNmyZ8z/X8O8C1U60Sc8puXALj4/WmZw==",
+      "version": "1.19.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.19.1.tgz",
+      "integrity": "sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==",
       "dev": true
     },
     "process-nextick-args": {
diff --git a/package.json b/package.json
index 0a736ae..9b1360f 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "mysql2": "^1.1.2",
     "nyc": "^12.0.0",
     "pg": "^7.1.0",
-    "prettier": "1.13.3",
+    "prettier": "1.19.1",
     "semantic-release": "^15.0.0",
     "sequelize": "^4.0.0",
     "typedoc": "^0.11.0",