diff --git a/ChangeLog b/ChangeLog
index 4a6ca13..e7c15d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,4 @@
-* 4.0.0 - May 19 2017
+* 4.0.0 - May 20 2017
 
 - Fixup short delay after a thread times out