diff --git a/config/environments/development.js.example b/config/environments/development.js.example
index dbe855fc..5a432914 100644
--- a/config/environments/development.js.example
+++ b/config/environments/development.js.example
@@ -73,6 +73,7 @@ var config = {
         max_size: 500
     }
     ,mapnik_version: undefined
+    ,mapnik_tile_format: 'png8:m=h'
     ,statsd: {
         host: 'localhost',
         port: 8125,
diff --git a/config/environments/production.js.example b/config/environments/production.js.example
index b3197f5f..08532ac1 100644
--- a/config/environments/production.js.example
+++ b/config/environments/production.js.example
@@ -67,6 +67,7 @@ var config = {
         max_size: 500
     }
     ,mapnik_version: undefined
+    ,mapnik_tile_format: 'png8:m=h'
     ,statsd: {
         host: 'localhost',
         port: 8125,
diff --git a/config/environments/staging.js.example b/config/environments/staging.js.example
index 3513f475..b30bca97 100644
--- a/config/environments/staging.js.example
+++ b/config/environments/staging.js.example
@@ -67,6 +67,7 @@ var config = {
         max_size: 500
     }
     ,mapnik_version: undefined
+    ,mapnik_tile_format: 'png8:m=h'
     ,statsd: {
         host: 'localhost',
         port: 8125,
diff --git a/config/environments/test.js.example b/config/environments/test.js.example
index e54a7df1..e313cf19 100644
--- a/config/environments/test.js.example
+++ b/config/environments/test.js.example
@@ -67,6 +67,7 @@ var config = {
         max_size: 500
     }
     ,mapnik_version: ''
+    ,mapnik_tile_format: 'png8:m=h'
     ,statsd: {
         host: 'localhost',
         port: 8125,
diff --git a/lib/cartodb/server_options.js b/lib/cartodb/server_options.js
index cd8098ad..d28588ae 100644
--- a/lib/cartodb/server_options.js
+++ b/lib/cartodb/server_options.js
@@ -49,6 +49,7 @@ module.exports = function(){
           datasource: global.environment.postgres,
           cachedir: global.environment.millstone.cache_basedir,
           mapnik_version: global.environment.mapnik_version || mapnik.versions.mapnik,
+          mapnik_tile_format: global.environment.mapnik_tile_format || 'png',
           default_layergroup_ttl: global.environment.mapConfigTTL || 7200, 
           gc_prob: 0.01 // @deprecated since Windshaft-1.8.0
         },
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index a331beb6..7e43e1ed 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -10,12 +10,12 @@
       "version": "1.3.3"
     },
     "windshaft": {
-      "version": "0.22.0",
-      "from": "https://github.com/CartoDB/Windshaft/tarball/0.22.0",
+      "version": "0.23.0",
+      "from": "https://github.com/CartoDB/Windshaft/tarball/0.23.0",
       "dependencies": {
         "grainstore": {
-          "version": "0.18.2",
-          "from": "git://github.com/CartoDB/grainstore.git#0.18.2",
+          "version": "0.19.0",
+          "from": "git://github.com/CartoDB/grainstore.git#0.19.0",
           "dependencies": {
             "carto": {
               "version": "0.9.5-cdb2",
diff --git a/package.json b/package.json
index 74daefb7..27cf05cf 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "dependencies": {
         "node-varnish": "http://github.com/Vizzuality/node-varnish/tarball/0.3.0",
         "underscore"  : "~1.3.3",
-        "windshaft"  : "https://github.com/CartoDB/Windshaft/tarball/0.22.0",
+        "windshaft": "https://github.com/CartoDB/Windshaft/tarball/0.23.0",
         "step": "0.0.x",
         "request": "2.9.202",
         "cartodb-redis": "git://github.com/CartoDB/node-cartodb-redis.git#0.5.0",