diff --git a/Gemfile.lock b/Gemfile.lock
index 3d5aac1..ad7a203 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,6 @@ PATH
   remote: .
   specs:
     yalphabetize (0.4.1)
-      psych (~> 3)
 
 GEM
   remote: https://rubygems.org/
@@ -30,7 +29,6 @@ GEM
     pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    psych (3.3.2)
     rainbow (3.0.0)
     regexp_parser (2.1.1)
     rexml (3.2.5)
diff --git a/yalphabetize.gemspec b/yalphabetize.gemspec
index e709d01..a17679d 100644
--- a/yalphabetize.gemspec
+++ b/yalphabetize.gemspec
@@ -9,7 +9,6 @@ Gem::Specification.new do |s|
   s.authors     = ['Sam Jenkins']
   s.files       = Dir['{bin,lib}/**/*']
   s.executables << 'yalphabetize'
-  s.add_runtime_dependency 'psych', '~> 3'
   s.add_development_dependency 'factory_bot'
   s.add_development_dependency 'pry'
   s.add_development_dependency 'rspec'