diff --git a/config/environments/development.js.example b/config/environments/development.js.example
index d44a2eca..caed4f92 100644
--- a/config/environments/development.js.example
+++ b/config/environments/development.js.example
@@ -19,7 +19,7 @@ var config = {
         */
         simplify: true
     }
-    ,mapnik_version: '2.0.2'
+    ,mapnik_version: undefined
     ,millstone: {
         cache_basedir: '/tmp/cdb-tiler-dev/millstone-dev'
     }
diff --git a/config/environments/production.js.example b/config/environments/production.js.example
index da3e8c25..8d910b7b 100644
--- a/config/environments/production.js.example
+++ b/config/environments/production.js.example
@@ -13,7 +13,7 @@ var config = {
         extent: "-20005048.4188,-20005048.4188,20005048.4188,20005048.4188",
         simplify: true
     }
-    ,mapnik_version: '2.0.2'
+    ,mapnik_version: undefined
     ,millstone: {
         cache_basedir: '/home/ubuntu/tile_assets/'
     }
diff --git a/config/environments/staging.js.example b/config/environments/staging.js.example
index e2522451..9c10dad7 100644
--- a/config/environments/staging.js.example
+++ b/config/environments/staging.js.example
@@ -13,7 +13,7 @@ var config = {
         extent: "-20005048.4188,-20005048.4188,20005048.4188,20005048.4188",
         simplify: true
     }
-    ,mapnik_version: '2.0.2'
+    ,mapnik_version: undefined
     ,millstone: {
         cache_basedir: '/home/ubuntu/tile_assets/'
     }