Weird bundler

website/Gemfile.lock

@@ -81,18 +81,18 @@ GEM
       celluloid (~> 0.16.0)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
-    middleman (3.3.13)
+    middleman (3.3.12)
       coffee-script (~> 2.2)
       compass (>= 1.0.0, < 2.0.0)
       compass-import-once (= 1.0.5)
       execjs (~> 2.0)
       haml (>= 4.0.5)
       kramdown (~> 1.2)
-      middleman-core (= 3.3.13)
+      middleman-core (= 3.3.12)
       middleman-sprockets (>= 3.1.2)
       sass (>= 3.4.0, < 4.0)
       uglifier (~> 2.5)
-    middleman-core (3.3.13)
+    middleman-core (3.3.12)
       activesupport (~> 4.1.0)
       bundler (~> 1.1)
       erubis