diff --git a/Android.bp b/Android.bp
index a0f9563..eb51eaa 100644
--- a/Android.bp
+++ b/Android.bp
@@ -6712,6 +6712,7 @@
 filegroup {
   name: "perfetto_src_trace_processor_lib",
   srcs: [
+    "src/trace_processor/dynamic/ancestor_slice_generator.cc",
     "src/trace_processor/dynamic/describe_slice_generator.cc",
     "src/trace_processor/dynamic/experimental_counter_dur_generator.cc",
     "src/trace_processor/dynamic/experimental_flamegraph_generator.cc",