diff --git a/fastlib2/contrib/dongryel/regression/build.py b/fastlib2/contrib/dongryel/regression/build.py
index dc5211a994..b261774b86 100644
--- a/fastlib2/contrib/dongryel/regression/build.py
+++ b/fastlib2/contrib/dongryel/regression/build.py
@@ -21,6 +21,7 @@ librule(
     headers = ["epan_kernel_moment_info.h",
                "krylov_lpr.h",
                "krylov_lpr_setup_impl.h",
+               "krylov_lpr_solver_impl.h",
                "krylov_lpr_test.h",
                "lpr_util.h",
                "multi_conjugate_gradient.h",