diff --git a/NEWS b/NEWS
index 568a50bb..1dfe2746 100644
--- a/NEWS
+++ b/NEWS
@@ -27,6 +27,9 @@
   * Improved String#{[], []=, +} and Array#+ performance. ~20% faster.
   * Improved String#{==, !=} performance. ~50% faster.
   * Improved String#include? with UTF-8 strings performance. ~15% faster.
+  * Improved String#{==, <=>}, NSString#== and Hash#== performance if it would
+    compare other class object. ~8 times faster.
+  * Improved Time#+ with float performance. ~80% faster.
   * Improved Array#{==, !=} performance. ~25% faster.
   * Improved Hash#{==, !=} performance. ~50% faster.
 
diff --git a/vm b/vm
index bd3d2084..81c98f81 160000
--- a/vm
+++ b/vm
@@ -1 +1 @@
-Subproject commit bd3d2084773bd201f1a037f832036dc7d399d160
+Subproject commit 81c98f81c9c0c663d59a420f52c1a79f6d1d3f60