diff --git a/core/kernel/taint_spec.rb b/core/kernel/taint_spec.rb
index 9a58bb5f0..6fbe9f0bf 100644
--- a/core/kernel/taint_spec.rb
+++ b/core/kernel/taint_spec.rb
@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "Kernel#taint" do
-  ruby_version_is ""..."3.0" do
+  ruby_version_is ""..."3.1" do
     it "is a no-op" do
       o = Object.new
       o.taint
@@ -16,4 +16,10 @@
       }.should complain(/Object#taint is deprecated and will be removed in Ruby 3.2/, verbose: true)
     end
   end
+
+  ruby_version_is "3.2" do
+    it "has been removed" do
+      Object.new.should_not.respond_to?(:taint)
+    end
+  end
 end
diff --git a/core/kernel/tainted_spec.rb b/core/kernel/tainted_spec.rb
index 7511c730c..3781d6e06 100644
--- a/core/kernel/tainted_spec.rb
+++ b/core/kernel/tainted_spec.rb
@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "Kernel#tainted?" do
-  ruby_version_is ""..."3.0" do
+  ruby_version_is ""..."3.1" do
     it "is a no-op" do
       o = mock('o')
       p = mock('p')
@@ -18,4 +18,10 @@
       }.should complain(/Object#tainted\? is deprecated and will be removed in Ruby 3.2/, verbose: true)
     end
   end
+
+  ruby_version_is "3.2" do
+    it "has been removed" do
+      Object.new.should_not.respond_to?(:tainted?)
+    end
+  end
 end
diff --git a/core/kernel/untaint_spec.rb b/core/kernel/untaint_spec.rb
index 42fe8a423..048b42cc1 100644
--- a/core/kernel/untaint_spec.rb
+++ b/core/kernel/untaint_spec.rb
@@ -2,7 +2,7 @@
 require_relative 'fixtures/classes'
 
 describe "Kernel#untaint" do
-  ruby_version_is ""..."3.0" do
+  ruby_version_is ""..."3.1" do
     it "is a no-op" do
       o = Object.new.taint
       o.should_not.tainted?
@@ -17,4 +17,10 @@
       }.should complain(/Object#untaint is deprecated and will be removed in Ruby 3.2/, verbose: true)
     end
   end
+
+  ruby_version_is "3.2" do
+    it "has been removed" do
+      Object.new.should_not.respond_to?(:untaint)
+    end
+  end
 end