compat: Update forward compatibility horizon to 2019-10-21

PiperOrigin-RevId: 275799990
Change-Id: I11e805303876cab4e0a47e4427a4fdcfb74706f2
diff --git a/tensorflow/python/compat/compat.py b/tensorflow/python/compat/compat.py
index d606b67..368ec9f 100644
--- a/tensorflow/python/compat/compat.py
+++ b/tensorflow/python/compat/compat.py
@@ -31,7 +31,7 @@
 # This value changes every day with an automatic CL. It can be modified in code
 # via `forward_compatibility_horizon()` or with the environment variable
 # TF_FORWARD_COMPATIBILITY_DELTA_DAYS, which is added to the compatibility date.
-_FORWARD_COMPATIBILITY_HORIZON = datetime.date(2019, 10, 20)
+_FORWARD_COMPATIBILITY_HORIZON = datetime.date(2019, 10, 21)
 _FORWARD_COMPATIBILITY_DELTA_DAYS_VAR_NAME = "TF_FORWARD_COMPATIBILITY_DELTA_DAYS"
 _FORWARD_COMPATIBILITY_DATE_NUMBER = None