2 files changed, 2 insertions, 1 deletions

diff --git a/app.json b/app.json
index 5ff27696..d0aedf3f 100644
--- a/app.json
+++ b/app.json
@@ -13,6 +13,7 @@
   "env": {
     "DJANGO_SETTINGS_MODULE": "saleor.settings",
     "DEBUG": "False",
+    "NPM_CONFIG_PRODUCTION": "false",
     "ALLOWED_HOSTS": {
       "description": "Comma-separated list of hosts",
       "value": ".herokuapp.com"
diff --git a/package.json b/package.json
index d1404f6b..775c1e84 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   },
   "homepage": "http://getsaleor.com/",
   "engines": {
-    "node": "5.10.x"
+    "node": "6.x"
   },
   "dependencies": {
     "bootstrap-sass": "^3.3.7",