diff --git a/neuralnetworks/1.3/Android.bp b/neuralnetworks/1.3/Android.bp
index 0b07a58..08e824d 100644
--- a/neuralnetworks/1.3/Android.bp
+++ b/neuralnetworks/1.3/Android.bp
@@ -8,6 +8,7 @@
     },
     srcs: [
         "types.hal",
+        "IBuffer.hal",
         "IDevice.hal",
         "IPreparedModel.hal",
         "IPreparedModelCallback.hal",