1 files changed, 11 insertions, 8 deletions
diff --git a/spec/ruby/library/matrix/column_size_spec.rb b/spec/ruby/library/matrix/column_size_spec.rb
index 041914e5b9..e7b42b101e 100644
--- a/spec/ruby/library/matrix/column_size_spec.rb
+++ b/spec/ruby/library/matrix/column_size_spec.rb
@@ -1,13 +1,16 @@
 require_relative '../../spec_helper'
-require 'matrix'
 
-describe "Matrix#column_size" do
-  it "returns the number of columns" do
-    Matrix[ [1,2], [3,4] ].column_size.should == 2
-  end
+ruby_version_is ""..."3.1" do
+  require 'matrix'
+
+  describe "Matrix#column_size" do
+    it "returns the number of columns" do
+      Matrix[ [1,2], [3,4] ].column_size.should == 2
+    end
 
-  it "returns 0 for empty matrices" do
-    Matrix[ [], [] ].column_size.should == 0
-    Matrix[ ].column_size.should == 0
+    it "returns 0 for empty matrices" do
+      Matrix[ [], [] ].column_size.should == 0
+      Matrix[ ].column_size.should == 0
+    end
   end
 end