diff --git a/CHANGELOG.md b/CHANGELOG.md
index a309d72..60b656a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,9 @@
 
 ##### Bug Fixes
 
-* None.  
+* Allow reading unquoted strings that contain `-`.  
+  [Samuel Giddins](https://github.com/segiddins)
+  [Xcodeproj#438](https://github.com/CocoaPods/Xcodeproj/issues/438)
 
 
 ## 0.1.3 (2016-11-01)
diff --git a/lib/nanaimo/reader.rb b/lib/nanaimo/reader.rb
index 5184157..e2d1278 100644
--- a/lib/nanaimo/reader.rb
+++ b/lib/nanaimo/reader.rb
@@ -112,7 +112,7 @@ def parse_object
 
     def parse_string
       eat_whitespace!
-      unless match = @scanner.scan(%r{[\w/.$]+})
+      unless match = @scanner.scan(%r{[\w/.$-]+}o)
         raise_parser_error ParseError, "not a valid string at index #{@scanner.pos} (char is #{current_character.inspect})"
       end
       Nanaimo::String.new(match, nil)
diff --git a/spec/nanaimo/reader_spec.rb b/spec/nanaimo/reader_spec.rb
index 52ee828..669a1a2 100644
--- a/spec/nanaimo/reader_spec.rb
+++ b/spec/nanaimo/reader_spec.rb
@@ -114,6 +114,14 @@ module Nanaimo
           expect(subject).to eq Nanaimo::Dictionary.new({ Nanaimo::String.new('key', '') => Nanaimo::String.new('$PROJECT_DIR/mogenerator/mogenerator', '') }, '')
         end
       end
+
+      describe 'that contain `-`' do
+        let(:unquoted_string) { 'foo/bar-baz' }
+
+        it 'are parsed correctly' do
+          expect(subject).to eq Nanaimo::Dictionary.new({ Nanaimo::String.new('key', '') => Nanaimo::String.new('foo/bar-baz', '') }, '')
+        end
+      end
     end
 
     describe 'quoted strings' do