diff --git a/ruby/t/tc_canvas.rb b/ruby/t/tc_canvas.rb
index ca480ab..31767cc 100644
--- a/ruby/t/tc_canvas.rb
+++ b/ruby/t/tc_canvas.rb
@@ -1,6 +1,6 @@
 require 'caca'
 
-class TC_Canvas < MiniTest::Test
+class TC_Canvas < Minitest::Test
     def setup
         @c = Caca::Canvas.new(3, 3)
     end
diff --git a/ruby/t/tc_display.rb b/ruby/t/tc_display.rb
index 7d0010c..97686ae 100644
--- a/ruby/t/tc_display.rb
+++ b/ruby/t/tc_display.rb
@@ -1,6 +1,6 @@
 require 'caca'
 
-class TC_Canvas < MiniTest::Test
+class TC_Canvas < Minitest::Test
     def test_create
         d = Caca::Display.new()
         refute_nil(d, 'Display creation failed')
diff --git a/ruby/t/tc_dither.rb b/ruby/t/tc_dither.rb
index bdb2956..c5ab27e 100644
--- a/ruby/t/tc_dither.rb
+++ b/ruby/t/tc_dither.rb
@@ -1,6 +1,6 @@
 require 'caca'
 
-class TC_Canvas < MiniTest::Test
+class TC_Canvas < Minitest::Test
     def test_create
         d = Caca::Dither.new(8, 32, 32, 32, 0, 0, 0, 0)
     end
diff --git a/ruby/t/tc_font.rb b/ruby/t/tc_font.rb
index 22915c9..9407b65 100644
--- a/ruby/t/tc_font.rb
+++ b/ruby/t/tc_font.rb
@@ -1,6 +1,6 @@
 require 'caca'
 
-class TC_Canvas < MiniTest::Test
+class TC_Canvas < Minitest::Test
     def test_list
         refute_nil(Caca::Font.list)
     end
diff --git a/ruby/t/tc_frame.rb b/ruby/t/tc_frame.rb
index 4887aed..5834e74 100644
--- a/ruby/t/tc_frame.rb
+++ b/ruby/t/tc_frame.rb
@@ -1,6 +1,6 @@
 require 'caca'
 
-class TC_Frame < MiniTest::Test
+class TC_Frame < Minitest::Test
     def setup
         @c = Caca::Canvas.new(3, 3)
     end