diff --git a/Gemfile b/Gemfile
index 1b9557e..62f98fa 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ group :development do
 end
 
 # build-time dependencies
-gem 'rake', '~> 10.0'
+gem 'rake', '~> 12.3', '>= 12.3.3'
 gem 'rspec', '~> 3.4'
 gem 'rubocop', '~> 1.2'
 gem 'simplecov', '~> 0.13'