diff --git a/ruby/tests/common_tests.rb b/ruby/tests/common_tests.rb
index 67781467a141..1f5013a529ad 100644
--- a/ruby/tests/common_tests.rb
+++ b/ruby/tests/common_tests.rb
@@ -1739,7 +1739,7 @@ def test_freeze
     m.freeze
 
     frozen_error = assert_raise(FrozenErrorType) { m.optional_int32 = 20 }
-    assert_equal "can't modify frozen #{proto_module}::TestMessage", frozen_error.message
+    assert_match "can't modify frozen #{proto_module}::TestMessage", frozen_error.message
     assert_equal 10, m.optional_int32
     assert_equal true, m.frozen?
 
diff --git a/ruby/tests/repeated_field_test.rb b/ruby/tests/repeated_field_test.rb
index ced9de83818e..6307447bc3f3 100755
--- a/ruby/tests/repeated_field_test.rb
+++ b/ruby/tests/repeated_field_test.rb
@@ -20,6 +20,7 @@ def test_acts_like_an_array
       :iter_for_each_with_index, :dimensions, :copy_data, :copy_data_simple,
       :nitems, :iter_for_reverse_each, :indexes, :append, :prepend]
     arr_methods -= [:union, :difference, :filter!]
+    arr_methods -= [:intersection, :deconstruct] # ruby 2.7 methods we can ignore
     arr_methods.each do |method_name|
       assert m.repeated_string.respond_to?(method_name) == true, "does not respond to #{method_name}"
     end
diff --git a/tests.sh b/tests.sh
index 9f485fee0947..84fb0b124b21 100755
--- a/tests.sh
+++ b/tests.sh
@@ -436,6 +436,10 @@ build_ruby26() {
   internal_build_cpp  # For conformance tests.
   cd ruby && bash travis-test.sh ruby-2.6.0 && cd ..
 }
+build_ruby27() {
+  internal_build_cpp  # For conformance tests.
+  cd ruby && bash travis-test.sh ruby-2.7.0 && cd ..
+}
 
 build_javascript() {
   internal_build_cpp