2 files changed, 5 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 01986e2680..5f8759ba3d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Mar  7 09:28:02 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
+
+	* thread.c: Mutex#owned? is no longer experimental since 2.1.0
+	  [fix GH-839][ci skip] Patch by @takiy33
+
 Sat Mar  7 09:18:42 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
 
 	* tool/merger.rb: Added documentation to version method.
diff --git a/thread.c b/thread.c
index 4f533d039d..e1bed76cdc 100644
--- a/thread.c
+++ b/thread.c
@@ -4356,7 +4356,6 @@ rb_mutex_lock(VALUE self)
  *    mutex.owned?  -> true or false
  *
  * Returns +true+ if this lock is currently held by current thread.
- * <em>This API is experimental, and subject to change.</em>
  */
 VALUE
 rb_mutex_owned_p(VALUE self)