diff --git a/ChangeLog b/ChangeLog
index 173edca..5a869e4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+* 4.0.0 - May 17 2017
+- Add "set_timeout" as a function decorator which takes a timeout value in
+seconds to apply func_timeout to all calls of that function
+
 * 3.1.0 - Jan 4 2017
 - Make windows compatible 
 - Add simple testcase, "testit.py"