diff --git a/Gemfile b/Gemfile
index 3a3f3371e..46d06e3af 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 group :development do
-  gem 'jekyll', '>= 3.0.0.pre.beta8'
+  gem 'jekyll', '>= 3.0.0.pre.beta9'
   gem 'jekyll-last-modified-at'
   gem 'stringex'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 8525d6cb6..4ce6b49ad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,12 +1,9 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    celluloid (0.16.0)
-      timers (~> 4.0.0)
     colorator (0.1)
     ffi (1.9.10)
-    hitimes (1.2.2)
-    jekyll (3.0.0.pre.beta8)
+    jekyll (3.0.0.pre.beta9)
       colorator (~> 0.1)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
@@ -19,30 +16,27 @@ GEM
       jekyll
     jekyll-sass-converter (1.3.0)
       sass (~> 3.2)
-    jekyll-watch (1.2.1)
-      listen (~> 2.7)
+    jekyll-watch (1.3.0)
+      listen (~> 3.0)
     kramdown (1.8.0)
     liquid (3.0.6)
-    listen (2.10.1)
-      celluloid (~> 0.16.0)
+    listen (3.0.3)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
     mercenary (0.3.5)
-    rb-fsevent (0.9.5)
+    rb-fsevent (0.9.6)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
-    rouge (1.9.1)
+    rouge (1.10.1)
     safe_yaml (1.0.4)
-    sass (3.4.16)
+    sass (3.4.18)
     stringex (2.5.2)
-    timers (4.0.1)
-      hitimes
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (>= 3.0.0.pre.beta8)
+  jekyll (>= 3.0.0.pre.beta9)
   jekyll-last-modified-at
   stringex