diff --git a/templates/invoice-ninja/0/docker-compose.yml b/templates/invoice-ninja/0/docker-compose.yml
index d254159..a1bff83 100644
--- a/templates/invoice-ninja/0/docker-compose.yml
+++ b/templates/invoice-ninja/0/docker-compose.yml
@@ -3,7 +3,7 @@ services:
   invoiceninja:
     image: invoiceninja/invoiceninja
     environment:
-      - APP_ENV: 'production'
+      - APP_ENV: "production"
       - APP_DEBUG: false
       - APP_URL: ${APP_URL}
       - APP_KEY: ${APP_KEY}
@@ -35,7 +35,7 @@ services:
       done
       EOF'
     environment:
-      - APP_ENV: 'production'
+      - APP_ENV: "production"
       - APP_DEBUG: false
       - APP_URL: ${APP_URL}
       - APP_KEY: ${APP_KEY}
@@ -53,7 +53,7 @@ services:
   db:
     image: mysql
     environment:
-      - APP_ENV: 'production'
+      - APP_ENV: "production"
       - APP_DEBUG: false
       # - APP_URL: ${APP_URL}
       # - APP_KEY: ${APP_KEY}