diff --git a/Gemfile b/Gemfile
index 6bb8db6..98ab4b0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
 
-gem 'rake'
+gem 'rake', '>= 12.3.3'
 gem 'jekyll'
 gem 'mini_magick'
diff --git a/Gemfile.lock b/Gemfile.lock
index 96080fc..684190a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,7 @@ GEM
     pygments.rb (0.5.4)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
-    rake (10.3.2)
+    rake (13.0.1)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.4)
       ffi (>= 0.5.0)
@@ -65,4 +65,7 @@ PLATFORMS
 DEPENDENCIES
   jekyll
   mini_magick
-  rake
+  rake (>= 12.3.3)
+
+BUNDLED WITH
+   1.17.3