diff --git a/.gitignore b/.gitignore
index 4b1cc92..42415e0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,8 +5,8 @@ release-builds
 /.gitignore
 /package-lock.json
 build/
-dist/
 script.sh
 /Mac_Distribution_Provisioning_Profiles_.provisionprofile
 !/build/
 /electron-builder.yml
+/dist/
diff --git a/README.md b/README.md
index 0ae1998..9128f5f 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ The original graphic will be not replaced.
 
 ## Download and Installation on MacOsX
 Download Image Shrinker here:  
-https://github.com/stefansl/image-shrinker/releases/download/v1.3.0/image-shrinker-1.3.0.dmg
+https://github.com/stefansl/image-shrinker/releases/download/v1.3.1/image-shrinker-1.3.1.dmg
 
 Unpack and copy or drag the app into your MacOSX application folder.
 For uninstalling, just drop the app into the bin.
diff --git a/main.js b/main.js
index 1279fdd..c3f2349 100644
--- a/main.js
+++ b/main.js
@@ -6,7 +6,7 @@ const fs = require('fs');
 const path = require('path');
 const settings = require('electron-settings');
 const svgo = require('svgo');
-const spawn = require('child_process').spawn;
+const execFile = require('child_process').execFile;
 const mozjpeg = require('mozjpeg');
 const pngquant = require('pngquant-bin');
 const makeDir = require('make-dir');
@@ -158,32 +158,18 @@ let processFile = (filePath, fileName) => {
             }
             case '.jpg':
             case '.jpeg': {
-                let jpg = spawn(mozjpeg, ['-outfile', newFile, filePath]);
-                jpg.stdout.on('data', (data) => {
-                    log.info('stdout: ' + data.toString());
-                });
-                jpg.on('close', () => {
+                execFile(mozjpeg, ['-outfile', newFile, filePath], (err) => {
                     touchBarResult.label = 'Your shrinked image: ' + newFile;
                     sendToRenderer(err, newFile, sizeOrig);
                 });
-                jpg.on('exit', (code) => {
-                    log.info('child process exited with code ' + code.toString());
-                });
 
                 break;
             }
             case '.png': {
-                let png = spawn(pngquant, ['-fo', newFile, filePath]);
-                png.stdout.on('data', (data) => {
-                    log.info('stdout: ' + data.toString());
-                });
-                png.on('close', () => {
+                execFile(pngquant, ['-fo', newFile, filePath], (err) => {
                     touchBarResult.label = 'Your shrinked image: ' + newFile;
                     sendToRenderer(err, newFile, sizeOrig);
                 });
-                png.on('exit', (code) => {
-                    log.info('child process exited with code ' + code.toString());
-                });
                 break;
             }
             default:
diff --git a/package.json b/package.json
index a656851..c25124b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "image-shrinker",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "GUI for minifying images",
   "main": "main.js",
   "title": "Image Shrinker",