src/HOL/IsaMakefile

   $(SRC)/Provers/Arith/cancel_numerals.ML \
   $(SRC)/Provers/Arith/combine_numerals.ML \
   $(SRC)/Provers/Arith/extract_common_term.ML \
   $(SRC)/Tools/cache_io.ML \
   $(SRC)/Tools/Metis/metis.ML \
+  Tools/ATP_Manager/async_manager.ML \
   Tools/ATP_Manager/atp_manager.ML \
   Tools/ATP_Manager/atp_systems.ML \
   Tools/choice_specification.ML \
   Tools/int_arith.ML \
   Tools/groebner.ML \