diff --git a/lib/utils.js b/lib/utils.js
index 257d67ab..197934aa 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -85,7 +85,10 @@ exports.concatStreams = function(streams) {
     if (!stream) return passThrough.end();
 
     stream.once("end", () => pipeNext(streams.shift()));
-    stream.pipe(passThrough, { end: false });
+    stream.pipe(
+      passThrough,
+      { end: false }
+    );
   };
   pipeNext(streams.shift());
   return passThrough;
diff --git a/package.json b/package.json
index 4c76e4a4..9084a422 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "md5": "2.2.1",
     "mocha": "5.2.0",
     "moment": "2.22.2",
-    "prettier": "1.12.1",
+    "prettier": "1.13.7",
     "prettier-check": "2.0.0",
     "request": "2.87.0",
     "request-promise-native": "1.0.5"