diff --git a/Gemfile b/Gemfile
index b348e4e..26e4b7e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,6 @@ source 'https://rubygems.org'
 gemspec
 
 group :development, :test do
-  gem 'rake', '~> 12.0.0'
+  gem 'rake', '~> 12.3.3'
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 99e44d1..c839d92 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,11 +22,12 @@ GEM
     diff-lcs (1.3)
     ethon (0.12.0)
       ffi (>= 1.3.0)
+    ffi (1.11.1)
     ffi (1.11.1-x64-mingw32)
     hashdiff (1.0.0)
     json (2.2.0)
     public_suffix (4.0.1)
-    rake (12.0.0)
+    rake (12.3.3)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -52,6 +53,7 @@ GEM
       hashdiff
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES
@@ -60,7 +62,7 @@ DEPENDENCIES
   autotest-fsevent (~> 0.2, >= 0.2.12)
   autotest-growl (~> 0.2, >= 0.2.16)
   autotest-rails-pure (~> 4.1, >= 4.1.2)
-  rake (~> 12.0.0)
+  rake (~> 12.3.3)
   rspec (~> 3.6, >= 3.6.0)
   vcr (~> 3.0, >= 3.0.1)
   webmock (~> 1.24, >= 1.24.3)