diff --git a/.rubocop.yml b/.rubocop.yml
index bef5f3d..58f6f20 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,7 +1,7 @@
 AllCops:
   NewCops: enable
   SuggestExtensions: false
-  TargetRubyVersion: 2.4
+  TargetRubyVersion: 2.5
   Exclude:
     - vendor/**/*
 
diff --git a/README.md b/README.md
index f8f5d3e..c184014 100644
--- a/README.md
+++ b/README.md
@@ -143,6 +143,7 @@ Notes:
 * If `required` is `true`, the question will repeat until the user answers the question
 * If `required` is `true`, then the `default` value will be ignored (defaults to `true`, but could be set to whatever and the code won't care... the question is required)
 * If `default` is `true` and `required` is `false`, and the user skips the question, the answer will be `true`
+* The response to the question MUST be given either as `y`/`n`/`yes`/`no` or with any capitalization... anything else given as a response will be unparseable
 
 <details><summary>Examples</summary>
 
@@ -174,7 +175,7 @@ Do you like Ruby?
 Do you like Ruby?
 --- This question is required ---
 Do you like Ruby?
-no
+N
 => false
 
 > HighlineWrapper.new.ask_yes_no('Do you like Ruby?')
@@ -182,7 +183,15 @@ Do you like Ruby?
 uh-huh
 --- This question is required ---
 Do you like Ruby?
+YES
+=> true
+
+> HighlineWrapper.new.ask_yes_no('Do you like Ruby?')
+Do you like Ruby?
 yep
+--- This question is required ---
+Do you like Ruby?
+yes
 => true
 ```
 
diff --git a/lib/highline_wrapper/version.rb b/lib/highline_wrapper/version.rb
index a7fa765..f8a8040 100644
--- a/lib/highline_wrapper/version.rb
+++ b/lib/highline_wrapper/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 class HighlineWrapper
-  VERSION = '1.1.0'
+  VERSION = '1.2.0'
 end
diff --git a/lib/highline_wrapper/yes_no_question.rb b/lib/highline_wrapper/yes_no_question.rb
index b11e427..d2938d7 100644
--- a/lib/highline_wrapper/yes_no_question.rb
+++ b/lib/highline_wrapper/yes_no_question.rb
@@ -16,10 +16,14 @@ def ask(prompt, options)
       end
 
       private def parse(answer, prompt, options)
-        return true if answer.include?('y')
-        return false if answer.include?('n')
-
-        recurse(prompt, nil, options)
+        case answer
+        when 'yes', 'y'
+          true
+        when 'no', 'n'
+          false
+        else
+          recurse(prompt, nil, options)
+        end
       end
 
       private def print_default_message(options)
diff --git a/spec/highline_wrapper/yes_no_question_spec.rb b/spec/highline_wrapper/yes_no_question_spec.rb
index ebc143a..1dc8ab0 100644
--- a/spec/highline_wrapper/yes_no_question_spec.rb
+++ b/spec/highline_wrapper/yes_no_question_spec.rb
@@ -28,7 +28,7 @@
     end
 
     it 'should ask the highline client ask' do
-      expect(highline).to receive(:ask)
+      expect(highline).to receive(:ask).and_return('Y')
       subject.ask(Faker::Lorem.sentence, options)
     end
 
@@ -49,6 +49,12 @@
       expect(subject).to receive(:print_default_message)
       subject.ask(Faker::Lorem.sentence, options)
     end
+
+    it 'should recurse if the answer given is unparseable' do
+      allow(highline).to receive(:ask).and_return('yep', 'yessss', 'yes')
+      expect(subject).to receive(:recurse).exactly(2).times.and_call_original
+      subject.ask(Faker::Lorem.sentence, options)
+    end
   end
 
   context 'with required set to true' do