diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 0e246a0297..9be355a99d 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -105,7 +105,7 @@ ifeq "" "$(PLATFORM_SECURITY_PATCH)"
   #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
   #
   #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-  PLATFORM_SECURITY_PATCH := 2017-09-01
+  PLATFORM_SECURITY_PATCH := 2017-10-01
 endif
 
 ifeq "" "$(PLATFORM_BASE_OS)"