diff --git a/test/ruby/test_weakmap.rb b/test/ruby/test_weakmap.rb
index 9bbe2d6b81..6455034743 100644
--- a/test/ruby/test_weakmap.rb
+++ b/test/ruby/test_weakmap.rb
@@ -178,6 +178,8 @@ class TestWeakMap < Test::Unit::TestCase
   end
 
   def test_compaction_bug_19529
+    omit "compaction is not supported on this platform" unless GC.respond_to?(:compact)
+
     obj = Object.new
     100.times do |i|
       GC.compact
diff --git a/version.h b/version.h
index 673864d759..3efe8f06d7 100644
--- a/version.h
+++ b/version.h
@@ -11,7 +11,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 2
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 56
+#define RUBY_PATCHLEVEL 57
 
 #include "ruby/version.h"
 #include "ruby/internal/abi.h"