diff --git a/pyflow/doc/ChangeLog.txt b/pyflow/doc/ChangeLog.txt
index f5895f0..79df3a8 100644
--- a/pyflow/doc/ChangeLog.txt
+++ b/pyflow/doc/ChangeLog.txt
@@ -1,3 +1,5 @@
+v1.1.12 20151203
+* lengthen signal file delay tolerance to 4 mins
 * [#14] Filter environment variables to remove bash functions. This
 eliminates complications between shellshock bash update and SGE.
 v1.1.11 20151125