diff --git a/lib/flexmock/partial_mock.rb b/lib/flexmock/partial_mock.rb
index 1dbf7db..0451480 100644
--- a/lib/flexmock/partial_mock.rb
+++ b/lib/flexmock/partial_mock.rb
@@ -276,7 +276,7 @@ def initialize_stub(recorder, expectations_block)
         expectation_blocks    = @initialize_expectation_blocks = Array.new
         expectation_recorders = @initialize_expectation_recorders = Array.new
         @initialize_override = Module.new do
-          define_method :initialize do |*args, &block|
+          define_method :initialize do |*args, **kw, &block|
             if self.class.respond_to?(:__flexmock_proxy) && (mock = self.class.__flexmock_proxy)
               container = mock.flexmock_container
               mock = container.flexmock(self)
@@ -287,7 +287,12 @@ def initialize_stub(recorder, expectations_block)
                 r.apply(mock)
               end
             end
-            super(*args, &block)
+            if kw.empty?
+              # Workaround kw arg support for ruby < 2.7
+              super(*args, &block)
+            else
+              super(*args, **kw, &block)
+            end
           end
         end
         override = @initialize_override
diff --git a/test/new_instances_test.rb b/test/new_instances_test.rb
index 8397ff5..8eef776 100644
--- a/test/new_instances_test.rb
+++ b/test/new_instances_test.rb
@@ -29,8 +29,10 @@ def self.make
 
   class Cat
     attr_reader :name
-    def initialize(name, &block)
+    attr_reader :kw
+    def initialize(name, **kw, &block)
       @name = name
+      @kw = kw
       block.call(self) if block_given?
     end
   end
@@ -94,10 +96,11 @@ def test_new_instances_will_pass_args_to_new
       obj.should_receive(:meow).and_return(:scratch)
     end
     x = :not_called
-    m = Cat.new("Fido") { x = :called }
+    m = Cat.new("Fido", a: 42) { x = :called }
     assert_equal :scratch,  m.meow
     assert_equal "Fido", m.name
     assert_equal :called, x
+    assert_equal({ a: 42 }, m.kw)
   end
 
   # Some versions of the software had problems invoking the block after a