diff --git a/package-lock.json b/package-lock.json
index d351724..86ac578 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3366,6 +3366,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -3690,7 +3691,8 @@
         "is-buffer": {
           "version": "1.1.6",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "is-builtin-module": {
           "version": "1.0.0",
@@ -3774,6 +3776,7 @@
           "version": "3.2.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "is-buffer": "^1.1.5"
           }
@@ -3820,7 +3823,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "lru-cache": {
           "version": "4.1.3",
@@ -4086,7 +4090,8 @@
         "repeat-string": {
           "version": "1.6.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "require-directory": {
           "version": "2.1.1",
@@ -4892,9 +4897,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "1.12.1",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.12.1.tgz",
-      "integrity": "sha1-wa0g6APndJ+vkFpAnSNn4Gu+cyU=",
+      "version": "1.18.2",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.18.2.tgz",
+      "integrity": "sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==",
       "dev": true
     },
     "process-nextick-args": {
diff --git a/package.json b/package.json
index 4726291..6fc085a 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "mocha": "^5.1.1",
     "nyc": "^13.0.0",
     "pg": "^7.4.3",
-    "prettier": "1.12.1",
+    "prettier": "1.18.2",
     "rimraf": "^2.5.4",
     "semantic-release": "^15.4.0",
     "sinon": "^7.0.0",