1 files changed, 5 insertions, 0 deletions

diff --git a/doc/NEWS b/doc/NEWS
index aef4836520..7a8a62321f 100644
--- a/doc/NEWS
+++ b/doc/NEWS
@@ -1,3 +1,8 @@
+: Thread#join
+
+  Optional argument limits maximum time to wait the thread in second.
+  And returns nil if timed out.
+
 : dl module
 
   Imported. An interface to the dynamic linker.