diff --git a/src/templates_hdf5/build.sh b/src/templates_hdf5/build.sh
index cff18b4..88a70a5 100644
--- a/src/templates_hdf5/build.sh
+++ b/src/templates_hdf5/build.sh
@@ -14,5 +14,8 @@ cat populated/pop_delete_group_hdf5.c >> trexio_hdf5.c
 cat populated/pop_hrw_*.h >> trexio_hdf5.h
 cat populated/pop_delete_group_hdf5.h >> trexio_hdf5.h
 
+cat hrw_determinant_hdf5.h >> trexio_hdf5.h
+cat *_determinant_hdf5.c >> trexio_hdf5.c
+
 cat helpers_hdf5.c  >> trexio_hdf5.c
 cat suffix_hdf5.h   >> trexio_hdf5.h