diff --git a/config/environments/config.js b/config/environments/config.js
index 21aa0952..f0cdd6b4 100644
--- a/config/environments/config.js
+++ b/config/environments/config.js
@@ -64,8 +64,8 @@ var config = {
     //  2. {{=it.user}}: will use the username as extraced from `user_from_host` or `routes`.
     //  3. {{=it.port}}: will use the `port` from this very same configuration file.
     resources_url_templates: {
-        http: 'http://{{=it.cdn_url}}/{{=it.user}}/api/v1/map',
-        https: 'https://{{=it.cdn_url}}/{{=it.user}}/api/v1/map'
+        http: process.env.CARTO_WINDSHAFT_RESOURCE_URL_TEMPLATE_HTTP || 'http://{{=it.cdn_url}}/{{=it.user}}/api/v1/map',
+        https: process.env.CARTO_WINDSHAFT_RESOURCE_URL_TEMPLATE_HTTPS || 'https://{{=it.cdn_url}}/{{=it.user}}/api/v1/map'
     },
     // Specify the maximum length of the queue of pending connections for the HTTP server.
     // The actual length will be determined by the OS through sysctl settings such as tcp_max_syn_backlog and somaxconn on Linux.
@@ -328,8 +328,8 @@ var config = {
     useProfiler: false,
     serverMetadata: {
         cdn_url: {
-            http: 'api.cartocdn.com',
-            https: 'cartocdn.global.ssl.fastly.net'
+            http: process.env.CARTO_WINDSHAFT_SERVER_CDN_URL_HTTP || 'api.cartocdn.com',
+            https: process.env.CARTO_WINDSHAFT_SERVER_CDN_URL_HTTPS || 'cartocdn.global.ssl.fastly.net'
         }
     },
     // Settings for the health check available at /health