diff --git a/default.xml b/default.xml
index 65f2423..2e7ac2a 100644
--- a/default.xml
+++ b/default.xml
@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="refs/tags/android-o-mr1-iot-release-smart-display-r3"
+  <default revision="refs/tags/android-o-mr1-iot-release-smart-display-r4"
            remote="aosp"
            sync-j="4" />