diff --git a/Gemfile b/Gemfile
index 4c613dc..3f54b8d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,5 +6,6 @@ gem 'github_api'
 gem 'colorize'
 
 group :test do
+    gem 'rspec'
     gem 'rubocop'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 43994a2..fb89569 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,6 +8,7 @@ GEM
     colorize (0.7.4)
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
+    diff-lcs (1.2.5)
     faraday (0.9.0)
       multipart-post (>= 1.2, < 3)
     github_api (0.12.2)
@@ -38,6 +39,19 @@ GEM
     rack (1.5.2)
     rainbow (2.0.0)
     rake (10.4.2)
+    rspec (3.2.0)
+      rspec-core (~> 3.2.0)
+      rspec-expectations (~> 3.2.0)
+      rspec-mocks (~> 3.2.0)
+    rspec-core (3.2.1)
+      rspec-support (~> 3.2.0)
+    rspec-expectations (3.2.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.2.0)
+    rspec-mocks (3.2.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.2.0)
+    rspec-support (3.2.2)
     rubocop (0.29.1)
       astrolabe (~> 1.3)
       parser (>= 2.2.0.1, < 3.0)
@@ -54,4 +68,5 @@ DEPENDENCIES
   colorize
   github_api
   rake
+  rspec
   rubocop