diff --git a/Gruntfile.js b/Gruntfile.js
index 218d48860..569e458e5 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -73,7 +73,7 @@ module.exports = function(grunt) {
       },
       config: {
         files: ['config.js'],
-        tasks: ['shell:dev', 'concat:main']
+        tasks: ['exec:dev', 'concat:main']
       },
       test: {
         files: ['test/**/*.js'],
diff --git a/browser-extensions/chrome/build.sh b/browser-extensions/chrome/build.sh
index cb7fbe92e..211de01f9 100755
--- a/browser-extensions/chrome/build.sh
+++ b/browser-extensions/chrome/build.sh
@@ -35,7 +35,7 @@ mkdir -p $APPDIR
 
 # Re-compile copayBundle.js
 echo "${OpenColor}${Green}* Generating copay bundle...${CloseColor}"
-grunt --target=dev shell
+grunt prod
 checkOK
 
 # Copy all chrome-extension files