add a NEWS for Fiber#transfer

1 files changed, 1 insertions, 0 deletions

diff --git a/NEWS.md b/NEWS.md
index d39c379d01..559bd97f80 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -190,6 +190,7 @@ Outstanding ones only.
     * `Fiber#blocking?` tells whether the fiber is non-blocking. [[Feature #16786]]
     * `Fiber#backtrace` & `Fiber#backtrace_locations` provide per-fiber backtrace.
       [[Feature #16815]]
+    * The limitation of `Fiber#transfer` is relaxed. [Bug #17221]
 
 * Kernel