diff --git a/test/Makefile.am b/test/Makefile.am
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -38,6 +38,7 @@
 	test/min_cost_arborescence_test \
 	test/min_cost_flow_test \
 	test/min_mean_cycle_test \
+	test/nagamochi_ibaraki_test \
 	test/path_test \
 	test/planarity_test \
 	test/preflow_test \
@@ -91,6 +92,7 @@
 test_min_cost_arborescence_test_SOURCES = test/min_cost_arborescence_test.cc
 test_min_cost_flow_test_SOURCES = test/min_cost_flow_test.cc
 test_min_mean_cycle_test_SOURCES = test/min_mean_cycle_test.cc
+test_nagamochi_ibaraki_test_SOURCES = test/nagamochi_ibaraki_test.cc
 test_path_test_SOURCES = test/path_test.cc
 test_planarity_test_SOURCES = test/planarity_test.cc
 test_preflow_test_SOURCES = test/preflow_test.cc