diff --git a/test/lib/test/unit/parallel.rb b/test/lib/test/unit/parallel.rb
index ea809f28ae..b0347d720e 100644
--- a/test/lib/test/unit/parallel.rb
+++ b/test/lib/test/unit/parallel.rb
@@ -151,8 +151,7 @@ module Test
       end
 
       def _report(res, *args) # :nodoc:
-        res = "#{res} #{args.pack("m0")}" unless args.empty?
-        @stdout.puts(res)
+        @stdout.write(args.empty? ? "#{res}\n" : "#{res} #{args.pack("m0")}\n")
       end
 
       def puke(klass, meth, e) # :nodoc:
diff --git a/version.h b/version.h
index 8f634100f8..499d4490d3 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.2.7"
 #define RUBY_RELEASE_DATE "2017-03-26"
-#define RUBY_PATCHLEVEL 427
+#define RUBY_PATCHLEVEL 428
 
 #define RUBY_RELEASE_YEAR 2017
 #define RUBY_RELEASE_MONTH 3