diff --git a/spec/oga/css/lexer/paths_spec.rb b/spec/oga/css/lexer/paths_spec.rb
index 2d85400..3038bc2 100644
--- a/spec/oga/css/lexer/paths_spec.rb
+++ b/spec/oga/css/lexer/paths_spec.rb
@@ -1,3 +1,5 @@
+# encoding: utf-8
+
 require 'spec_helper'
 
 describe Oga::CSS::Lexer do
diff --git a/spec/oga/xpath/lexer/general_spec.rb b/spec/oga/xpath/lexer/general_spec.rb
index 6926249..37648d0 100644
--- a/spec/oga/xpath/lexer/general_spec.rb
+++ b/spec/oga/xpath/lexer/general_spec.rb
@@ -1,3 +1,5 @@
+# encoding: utf-8
+
 require 'spec_helper'
 
 describe Oga::XPath::Lexer do