diff --git a/default.xml b/default.xml
index 54fe58e..051ff08 100644
--- a/default.xml
+++ b/default.xml
@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch="https://android.googlesource.com"
            review="https://android-review.googlesource.com/" />
-  <default revision="refs/tags/android-10.0.0_r14"
+  <default revision="refs/tags/android-10.0.0_r20"
            remote="aosp"
            sync-c="true"
            sync-j="12" />
@@ -33,9 +33,6 @@
   <project path="developers/demos" name="platform/developers/demos" groups="developers" />
   <project path="developers/samples/android" name="platform/developers/samples/android" groups="developers" />
   <project path="development" name="platform/development" groups="developers,pdk-cw-fs,pdk-fs" />
-  <!--
-	 : Don"t clog up git with lots of binaries but allow to revert single kernel revision to help diagnose issues.
-   -->
   <project path="device/amlogic/yukawa" name="device/amlogic/yukawa" groups="device,yukawa,pdk" />
   <project path="device/amlogic/yukawa-kernel" name="device/amlogic/yukawa-kernel" groups="device,yukawa,pdk" clone-depth="1" />
   <project path="device/common" name="device/common" groups="pdk-cw-fs,pdk" />
@@ -242,6 +239,7 @@
   <project path="external/libevent" name="platform/external/libevent" groups="pdk" />
   <project path="external/libexif" name="platform/external/libexif" groups="pdk" />
   <project path="external/libffi" name="platform/external/libffi" groups="pdk" />
+  <project path="external/libgav1" name="platform/external/libgav1" groups="pdk" />
   <project path="external/libgsm" name="platform/external/libgsm" groups="pdk" />
   <project path="external/libhevc" name="platform/external/libhevc" groups="pdk" />
   <project path="external/libjpeg-turbo" name="platform/external/libjpeg-turbo" groups="pdk" />
@@ -300,9 +298,7 @@
   <project path="external/nfacct" name="platform/external/nfacct" groups="pdk" />
   <project path="external/nist-pkits" name="platform/external/nist-pkits" groups="pdk" />
   <project path="external/nist-sip" name="platform/external/nist-sip" groups="pdk" />
-  <project path="external/nos/host/android" name="platform/external/nos/host/android" groups="pixel" />
   <project path="external/nos/host/generic" name="platform/external/nos/host/generic" groups="pixel" />
-  <project path="external/nos/test/system-test-harness" name="platform/external/nos/test/system-test-harness" groups="pixel" />
   <project path="external/noto-fonts" name="platform/external/noto-fonts" groups="pdk" />
   <project path="external/oauth" name="platform/external/oauth" groups="pdk" />
   <project path="external/objenesis" name="platform/external/objenesis" groups="pdk" />
@@ -491,6 +487,7 @@
   <project path="hardware/google/easel" name="platform/hardware/google/easel" groups="pdk,easel" />
   <project path="hardware/google/interfaces" name="platform/hardware/google/interfaces" groups="pdk" />
   <project path="hardware/google/pixel" name="platform/hardware/google/pixel" groups="generic_fs,pixel" />
+  <project path="hardware/google/pixel-sepolicy" name="platform/hardware/google/pixel-sepolicy" groups="generic_fs,pixel" />
   <project path="hardware/interfaces" name="platform/hardware/interfaces" groups="pdk" />
   <project path="hardware/invensense" name="platform/hardware/invensense" groups="invensense,pdk" />
   <project path="hardware/knowles/athletico/sound_trigger_hal" name="platform/hardware/knowles/athletico/sound_trigger_hal" groups="coral" />
@@ -617,7 +614,7 @@
   <project path="packages/apps/TV" name="platform/packages/apps/TV" groups="pdk" />
   <project path="packages/apps/UnifiedEmail" name="platform/packages/apps/UnifiedEmail" groups="pdk-fs" />
   <project path="packages/apps/UniversalMediaPlayer" name="platform/packages/apps/UniversalMediaPlayer" />
-  <project path="packages/apps/WallpaperPicker" name="platform/packages/apps/WallpaperPicker" groups="pdk-fs" />
+  <project path="packages/apps/WallpaperPicker" name="platform/packages/apps/WallpaperPicker" groups="pdk-fs"  />
   <project path="packages/apps/WallpaperPicker2" name="platform/packages/apps/WallpaperPicker2" groups="pdk-fs" />
   <project path="packages/inputmethods/LatinIME" name="platform/packages/inputmethods/LatinIME" groups="pdk-fs" />
   <project path="packages/modules/CaptivePortalLogin" name="platform/packages/modules/CaptivePortalLogin" groups="pdk-cw-fs,pdk-fs" />
@@ -784,6 +781,7 @@
   <project path="tools/tradefederation/core" name="platform/tools/tradefederation" groups="pdk,tradefed" />
   <project path="tools/tradefederation/contrib" name="platform/tools/tradefederation/contrib" groups="pdk,tradefed" />
   <project path="tools/trebuchet" name="platform/tools/trebuchet" groups="tools,cts,pdk,pdk-cw-fs,pdk-fs" />
+
   <repo-hooks in-project="platform/tools/repohooks" enabled-list="pre-upload" />
   <!-- OmniROM -->
   <include name="omni-default.xml" />