diff --git a/Android.bp b/Android.bp
index c9ec63f..24d4d99 100644
--- a/Android.bp
+++ b/Android.bp
@@ -195,7 +195,7 @@
     ],
 
     shared_libs: [
-        "android.hardware.graphics.composer3-V3-ndk",
+        "android.hardware.graphics.composer3-V4-ndk",
         "libbase",
         "libbinder_ndk",
         "liblog",
diff --git a/OWNERS b/OWNERS
index 39f2084..a4f788d 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,4 +1,4 @@
 adelva@google.com
+ddavenport@google.com
 jstultz@google.com
-marcheu@google.com
 seanpaul@google.com
diff --git a/hwc3/ComposerClient.cpp b/hwc3/ComposerClient.cpp
index 47ffc7e..fd4dedc 100644
--- a/hwc3/ComposerClient.cpp
+++ b/hwc3/ComposerClient.cpp
@@ -30,6 +30,7 @@
 #include <aidl/android/hardware/graphics/composer3/Composition.h>
 #include <aidl/android/hardware/graphics/composer3/DisplayRequest.h>
 #include <aidl/android/hardware/graphics/composer3/IComposerClient.h>
+#include <aidl/android/hardware/graphics/composer3/Luts.h>
 #include <aidl/android/hardware/graphics/composer3/PowerMode.h>
 #include <aidl/android/hardware/graphics/composer3/PresentOrValidate.h>
 #include <aidl/android/hardware/graphics/composer3/RenderIntent.h>
@@ -587,6 +588,9 @@
   if (command.sidebandStream) {
     cmd_result_writer_->AddError(hwc3::Error::kUnsupported);
   }
+  if (command.luts) {
+    cmd_result_writer_->AddError(hwc3::Error::kUnsupported);
+  }
   // TODO: Blocking region handling missing.
   // TODO: Layer surface damage.
   // TODO: Layer visible region.
@@ -1291,6 +1295,10 @@
 
 #endif
 
+ndk::ScopedAStatus ComposerClient::getMaxLayerPictureProfiles(int64_t, int32_t*) {
+  return ToBinderStatus(hwc3::Error::kUnsupported);
+}
+
 std::string ComposerClient::Dump() {
   uint32_t size = 0;
   hwc_->Dump(&size, nullptr);
diff --git a/hwc3/ComposerClient.h b/hwc3/ComposerClient.h
index 91a0be0..45f0a4c 100644
--- a/hwc3/ComposerClient.h
+++ b/hwc3/ComposerClient.h
@@ -152,6 +152,9 @@
 
 #endif
 
+  ndk::ScopedAStatus getMaxLayerPictureProfiles(
+      int64_t display, int32_t* maxProfiles) override;
+
  protected:
   ::ndk::SpAIBinder createBinder() override;
 
diff --git a/hwc3/hwc3-drm.xml b/hwc3/hwc3-drm.xml
index 911f7f8..7debcf9 100644
--- a/hwc3/hwc3-drm.xml
+++ b/hwc3/hwc3-drm.xml
@@ -1,7 +1,7 @@
 <manifest version="1.0" type="device">
     <hal format="aidl">
         <name>android.hardware.graphics.composer3</name>
-        <version>3</version>
+        <version>4</version>
         <interface>
             <name>IComposer</name>
             <instance>default</instance>