diff --git a/Gemfile b/Gemfile
index 2fb242d..6177c1f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ group :development do
   gem 'jekyll-sitemap'
   gem 'rdiscount', '~> 2.0'
   gem 'RedCloth', '~> 4.2.9'
-  gem 'haml', '~> 4.0'
+  gem 'haml', '~> 5.1'
   gem 'compass', '~> 0.12.2'
   gem 'sass-globbing', '~> 1.0.0'
   gem 'rubypants', '~> 0.2.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index dd6315a..3a7bc2a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,8 @@ GEM
     fast-stemmer (1.0.2)
     ffi (1.9.14)
     fssm (0.2.10)
-    haml (4.0.7)
+    haml (5.1.2)
+      temple (>= 0.8.0)
       tilt
     jekyll (2.5.3)
       classifier-reborn (~> 2.0)
@@ -66,7 +67,7 @@ GEM
       jekyll (>= 2.0)
     parslet (1.5.0)
       blankslate (~> 2.0)
-    posix-spawn (0.3.11)
+    posix-spawn (0.3.13)
     pygments.rb (0.6.3)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.2.0)
@@ -92,10 +93,11 @@ GEM
       rack-protection (~> 1.4)
       tilt (>= 1.3, < 3)
     stringex (1.4.0)
-    tilt (2.0.5)
+    temple (0.8.2)
+    tilt (2.0.10)
     toml (0.1.2)
       parslet (~> 1.5.0)
-    yajl-ruby (1.4.1)
+    yajl-ruby (1.2.3)
 
 PLATFORMS
   ruby
@@ -103,7 +105,7 @@ PLATFORMS
 DEPENDENCIES
   RedCloth (~> 4.2.9)
   compass (~> 0.12.2)
-  haml (~> 4.0)
+  haml (~> 5.1)
   jekyll (~> 2.0)
   jekyll-sitemap
   octopress-date-format (~> 2.0)