diff --git a/default.xml b/default.xml
index 763af44..3be4662 100644
--- a/default.xml
+++ b/default.xml
@@ -11,14 +11,14 @@
   <remote  name="aosp"
            fetch="https://android.googlesource.com"
            review="android-review.googlesource.com"
-           revision="refs/tags/android-12.1.0_r2" />
+           revision="refs/tags/android-12.1.0_r4" />
 
   <default revision="refs/heads/lineage-19.1"
            remote="github"
            sync-c="true"
            sync-j="4" />
 
-  <superproject name="platform/superproject" remote="aosp" revision="android-12.1.0_r2" />
+  <superproject name="platform/superproject" remote="aosp" revision="android-12.1.0_r4" />
   <contactinfo bugurl="go/repo-bug" />
 
   <!-- AOSP Projects -->