diff --git a/NEWS b/NEWS
index e0da7aa8..6e31f6a2 100644
--- a/NEWS
+++ b/NEWS
@@ -18,6 +18,8 @@
   * Added to support "value of def-expr" feature.
   * Fixed a bug which NSDate.distantFuture returns wrong value.
   * Fixed a memory leak where an exception message would be created.
+  * Fixed a bug where cycle detector works in asynchronous Dispatch::Queue even
+    if it set ARR_CYCLES_DISABLE.
   * Optimized where it would convert type implicit using #to_str etc.
   * Improved String#to_sym performance. ~40% faster.
   * Improved performance in dispatcher. ~20% faster.
diff --git a/vm b/vm
index 3fdbf4de..f47955ba 160000
--- a/vm
+++ b/vm
@@ -1 +1 @@
-Subproject commit 3fdbf4de10c736f55fd164dd707393d2fe98ab6e
+Subproject commit f47955ba7dd58ced52a03522d17c34afc7d19f9e