diff --git a/Examples/test-suite/ruby/cpp11_hash_tables_runme.rb b/Examples/test-suite/ruby/cpp11_hash_tables_runme.rb
index db910505e..a7b384692 100644
--- a/Examples/test-suite/ruby/cpp11_hash_tables_runme.rb
+++ b/Examples/test-suite/ruby/cpp11_hash_tables_runme.rb
@@ -5,6 +5,9 @@ require 'cpp11_hash_tables'
  Cpp11_hash_tables::MultiMapIntInt.new({1=>7}),
  Cpp11_hash_tables::UnorderedMapIntInt.new({1=>7}),
  Cpp11_hash_tables::UnorderedMultiMapIntInt.new({1=>7})].each{|x|
+
+  swig_assert_equal("x.find_all{|e,k| e == 1}", "[[1,7]]", binding)
+
   swig_assert_equal("x[1]", "7", binding)
   swig_assert_equal("x[2]", "nil", binding)
   x[2] = 9
@@ -27,6 +30,9 @@ require 'cpp11_hash_tables'
  Cpp11_hash_tables::MultiSetInt.new([1]),
  Cpp11_hash_tables::UnorderedSetInt.new([1]),
  Cpp11_hash_tables::UnorderedMultiSetInt.new([1])].each{|x|
+
+  swig_assert_equal("x.find_all{|e| e == 1}", "[1]", binding)
+
   swig_assert_equal("x.include?(1)", "true", binding)
   swig_assert_equal("x.include?(2)", "false", binding)
   x << 2
@@ -42,3 +48,13 @@ require 'cpp11_hash_tables'
   x << 1
   swig_assert_equal("x.count(1)", "2", binding)
 }
+
+[Cpp11_hash_tables::MapIntInt,
+ Cpp11_hash_tables::MultiMapIntInt,
+ Cpp11_hash_tables::UnorderedMapIntInt,
+ Cpp11_hash_tables::UnorderedMultiMapIntInt,
+ Cpp11_hash_tables::SetInt,
+ Cpp11_hash_tables::UnorderedSetInt,
+ Cpp11_hash_tables::UnorderedMultiSetInt].each{|k|
+  swig_assert("k.include?(Enumerable)", binding)
+}
diff --git a/Lib/ruby/std_multiset.i b/Lib/ruby/std_multiset.i
index 87a7b292a..252ae10d2 100644
--- a/Lib/ruby/std_multiset.i
+++ b/Lib/ruby/std_multiset.i
@@ -36,7 +36,7 @@
 
 #define %swig_multiset_methods(Set...) %swig_set_methods(Set)
 
-
+%mixin std::multiset "Enumerable";
 
 %rename("delete")     std::multiset::__delete__;
 %rename("reject!")    std::multiset::reject_bang;
diff --git a/Lib/ruby/std_unordered_multiset.i b/Lib/ruby/std_unordered_multiset.i
index 8e0a62b30..29fa73a98 100644
--- a/Lib/ruby/std_unordered_multiset.i
+++ b/Lib/ruby/std_unordered_multiset.i
@@ -36,6 +36,8 @@
 
 #define %swig_unordered_multiset_methods(Set...) %swig_unordered_set_methods(Set)
 
+%mixin std::unordered_multiset "Enumerable";
+
 %rename("delete")     std::unordered_multiset::__delete__;
 %rename("reject!")    std::unordered_multiset::reject_bang;
 %rename("map!")       std::unordered_multiset::map_bang;