diff -urp '--exclude=*~' flexmock-2.3.6/lib.orig/flexmock/composite_expectation.rb flexmock-2.3.6/lib/flexmock/composite_expectation.rb
--- flexmock-2.3.6/lib.orig/flexmock/composite_expectation.rb	2021-01-24 01:35:33.614853539 +0900
+++ flexmock-2.3.6/lib/flexmock/composite_expectation.rb	2021-01-24 02:27:58.007313654 +0900
@@ -16,9 +16,9 @@ class FlexMock
     end
 
     # Apply the constraint method to all expectations in the composite.
-    def method_missing(sym, *args, &block)
+    def method_missing(sym, *args, **keywords, &block)
       @expectations.each do |expectation|
-        expectation.send(sym, *args, &block)
+        expectation.send(sym, *args, **keywords, &block)
       end
       self
     end