diff --git a/lib/pattern_patch/patch.rb b/lib/pattern_patch/patch.rb
index 083e422..aa4e234 100644
--- a/lib/pattern_patch/patch.rb
+++ b/lib/pattern_patch/patch.rb
@@ -1,3 +1,4 @@
+require "active_support/core_ext/hash"
 require "yaml"
 
 module PatternPatch
@@ -9,7 +10,7 @@ class Patch
 
     class << self
       def from_yaml(path)
-        hash = YAML.load_file path
+        hash = YAML.load_file(path).symbolize_keys
 
         # Adjust string fields from YAML
 
@@ -34,6 +35,7 @@ def initialize(options = {})
 
     def apply(files, options = {})
       offset = options[:offset] || 0
+      files = [files] if files.kind_of? String
 
       files.each do |path|
         modified = Utilities.apply_patch File.read(path),
@@ -48,6 +50,7 @@ def apply(files, options = {})
 
     def revert(files, options = {})
       offset = options[:offset] || 0
+      files = [files] if files.kind_of? String
 
       files.each do |path|
         modified = Utilities.revert_patch File.read(path),
diff --git a/pattern_patch.gemspec b/pattern_patch.gemspec
index 40a4558..db0aea8 100644
--- a/pattern_patch.gemspec
+++ b/pattern_patch.gemspec
@@ -15,6 +15,8 @@ Gem::Specification.new do |spec|
   spec.homepage    = 'http://github.com/jdee/pattern_patch'
   spec.license     = 'MIT'
 
+  spec.add_dependency 'activesupport'
+
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'pry'
   spec.add_development_dependency 'rake'
diff --git a/spec/patch_spec.rb b/spec/patch_spec.rb
index c25a585..6d66315 100644
--- a/spec/patch_spec.rb
+++ b/spec/patch_spec.rb
@@ -42,7 +42,7 @@
 
       expect(File).to receive(:write).with('file.txt', 'xy')
 
-      patch.apply ['file.txt']
+      patch.apply 'file.txt'
     end
 
     it 'passes the offset option if present' do
@@ -60,7 +60,7 @@
 
       expect(File).to receive(:write).with('file.txt', 'x')
 
-      patch.apply ['file.txt'], offset: 1
+      patch.apply 'file.txt', offset: 1
     end
   end
 
@@ -79,7 +79,7 @@
 
       expect(File).to receive(:write).with('file.txt', 'x')
 
-      patch.revert ['file.txt']
+      patch.revert 'file.txt'
     end
 
     it 'passes the offset option if present' do
@@ -97,7 +97,7 @@
 
       expect(File).to receive(:write).with('file.txt', 'x')
 
-      patch.revert ['file.txt'], offset: 1
+      patch.revert 'file.txt', offset: 1
     end
   end