diff --git a/Rules b/Rules
index 13c479e..b0d6960 100644
--- a/Rules
+++ b/Rules
@@ -20,14 +20,14 @@ end
 
 compile '/assets/js/*' do
   filter :erb
-  filter :uglify_js if File.basename(item[:content_filename], ".*") == 'all'
+  :uglify_js if File.basename(item[:content_filename], ".*") == 'all'
 end
 
 compile '/content/*' do
-  if item.identifier == '/content/toc/'
+  if item.identifier.to_s == '/content/toc/'
     filter :kramdown
     layout 'blank'
-  elsif item.identifier == '/content/footer/'
+  elsif item.identifier.to_s == '/content/footer/'
     layout 'blank'
   elsif item[:extension] == 'md'
     filter :kramdown, {:input => 'GFM'}
@@ -43,18 +43,18 @@ end
 route '/assets/css/*' do
   # if not debug mode, only let all.css through
   unless @config[:debug] 
-    item.identifier.chop + '.css' if File.basename(item[:content_filename], ".*") == 'all' 
+    item.identifier.to_s.chop + '.css' if File.basename(item[:content_filename], ".*") == 'all' 
   else
-    item.identifier.chop + '.css'
+    item.identifier.to_s.chop + '.css'
   end
 end
 
 route '/assets/js/*' do
   # if not debug mode, only let all.js through
   unless @config[:debug]
-    item.identifier.chop + '.js' if File.basename(item[:content_filename], ".*") == 'all'
+    item.identifier.to_s.chop + '.js' if File.basename(item[:content_filename], ".*") == 'all'
   else
-    item.identifier.chop + '.js'
+    item.identifier.to_s.chop + '.js'
   end
 end
 
@@ -62,10 +62,10 @@ end
 route '/content/*' do
   if item.binary?
     # Write item with identifier /foo/ to /foo.ext
-    item.identifier.sub("/content", "").chop + '.' + item[:extension]
+    item.identifier.to_s.sub("/content", "").chop + '.' + item[:extension]
   else
     # Write item with identifier /foo/ to /foo/index.html
-    item.identifier.sub("/content", "") + 'index.html'
+    item.identifier.to_s.sub("/content", "") + 'index.html'
   end
 end
 
diff --git a/nanoc.yaml b/nanoc.yaml
index adb6bb3..d614d61 100644
--- a/nanoc.yaml
+++ b/nanoc.yaml
@@ -29,6 +29,8 @@ prune:
   # .git, .svn etc.
   exclude: [ '.git', '.hg', '.svn', 'CVS' ]
 
+string_pattern_type: legacy
+
 # The data sources where nanoc loads its data from. This is an array of
 # hashes; each array element represents a single data source. By default,
 # there is only a single data source that reads data from the “content/” and
@@ -38,6 +40,8 @@ data_sources:
     # The type is the identifier of the data source. By default, this will be
     # `filesystem_unified`.
     type: filesystem_unified
+    identifier_type: legacy
+    encoding: utf-c8
 
     # The path where items should be mounted (comparable to mount points in
     # Unix-like systems). This is “/” by default, meaning that items will have
diff --git a/wercker.yml b/wercker.yml
index 1b01e2d..0eb1e2d 100644
--- a/wercker.yml
+++ b/wercker.yml
@@ -1,13 +1,14 @@
-box: flaviut/nim-by-example-build-vm@0.0.7
+box: flaviut/nim-by-example-build-vm:0.1.2
 build:
     steps:
         - script:
             name: build
             code: |
-              source /home/ubuntu/.rvm/scripts/rvm
+              source /usr/local/rvm/scripts/rvm
               git remote add publish 'git@github.com:nim-by-example/nim-by-example.github.io.git'
               git config --global user.email 'nim-by-example.github.io'
               git config --global user.name 'Builder'
+              git config --global push.default simple
               git checkout master
               nanoc
               cp -r ./output/. ./
@@ -16,11 +17,15 @@ build:
               git commit -am'Build Site'
 deploy:
     steps:
+        - script:
+            name: ssh-keys
+            code: |
+              mkdir -p ~/.ssh/
+              echo 'github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==' > ~/.ssh/known_hosts
+              echo -e "$GIT_CREDENTIALS" > ~/.ssh/id_rsa
+              chmod 0600 ~/.ssh/id_rsa
+              chmod 0644 ~/.ssh/known_hosts
         - script:
             name: deploy
             code: |
-              mkdir ~/.ssh/
-              echo 'github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==' > ~/.ssh/known_hosts
-              echo "$GIT_CREDENTIALS" > ~/.ssh/id_rsa
-              chmod 0600 ~/.ssh/id_rsa
               git push --force publish