diff --git a/neuralnetworks/1.2/Android.bp b/neuralnetworks/1.2/Android.bp
index e155bbd..528a2c7 100644
--- a/neuralnetworks/1.2/Android.bp
+++ b/neuralnetworks/1.2/Android.bp
@@ -9,6 +9,9 @@
     srcs: [
         "types.hal",
         "IDevice.hal",
+        "IExecutionCallback.hal",
+        "IPreparedModel.hal",
+        "IPreparedModelCallback.hal",
     ],
     interfaces: [
         "android.hardware.neuralnetworks@1.0",