diff --git a/app/package.json b/app/package.json
index 1970591..10ef67d 100644
--- a/app/package.json
+++ b/app/package.json
@@ -8,6 +8,7 @@
     "electron-settings": "^1.0.4",
     "electron-window-state": "^3.0.3",
     "fix-path": "^2.0.0",
+    "ps-tree": "^1.1.0",
     "vue": "^1.0.24",
     "vue-electron": "^1.0.0",
     "vue-router": "^0.7.13",
diff --git a/app/src/components/RepoView/CommandOutput.vue b/app/src/components/RepoView/CommandOutput.vue
index 8328ac2..ff1306b 100644
--- a/app/src/components/RepoView/CommandOutput.vue
+++ b/app/src/components/RepoView/CommandOutput.vue
@@ -149,6 +149,7 @@
     data() {
       return {
         exec          : this.$electron.remote.require( 'child_process' ).exec,
+        psTree        : this.$electron.remote.require( 'ps-tree' ),
         process       : null,
         processStatus : null,
         processCmd    : null,
@@ -185,7 +186,11 @@
 
       killScript() {
         if ( this.process ) {
-          this.process.kill( 'SIGTERM' );
+          // make sure also child processes
+          // of child processes get killed
+          this.psTree( this.process.pid, ( err, children ) => {
+            this.exec( `kill -9 ${ children.map( p => p.PID ).join( ' ' ) }` );
+          } );
         }
       },
 
diff --git a/config.js b/config.js
index 208da1a..f074bff 100644
--- a/config.js
+++ b/config.js
@@ -11,7 +11,7 @@ const config = {
   vueDevTools : false,
   build       : {
     'app-version'        : pkg.version,
-    packagesToBeIncluded : [ 'fix-path', 'electron-window-state' ],
+    packagesToBeIncluded : [ 'fix-path', 'electron-window-state', 'ps-tree' ],
     overwrite            : true,
     asar                 : true,
     dmg                  : {