1 files changed, 12 insertions, 9 deletions
diff --git a/spec/ruby/library/matrix/lup_decomposition/initialize_spec.rb b/spec/ruby/library/matrix/lup_decomposition/initialize_spec.rb
index 36afb349e6..42f78c7540 100644
--- a/spec/ruby/library/matrix/lup_decomposition/initialize_spec.rb
+++ b/spec/ruby/library/matrix/lup_decomposition/initialize_spec.rb
@@ -1,13 +1,16 @@
 require_relative '../../../spec_helper'
-require 'matrix'
 
-describe "Matrix::LUPDecomposition#initialize" do
-  it "raises an error if argument is not a matrix" do
-    -> {
-      Matrix::LUPDecomposition.new([[]])
-    }.should raise_error(TypeError)
-    -> {
-      Matrix::LUPDecomposition.new(42)
-    }.should raise_error(TypeError)
+ruby_version_is ""..."3.1" do
+  require 'matrix'
+
+  describe "Matrix::LUPDecomposition#initialize" do
+    it "raises an error if argument is not a matrix" do
+      -> {
+        Matrix::LUPDecomposition.new([[]])
+      }.should raise_error(TypeError)
+      -> {
+        Matrix::LUPDecomposition.new(42)
+      }.should raise_error(TypeError)
+    end
   end
 end