diff --git a/test/Makefile.am b/test/Makefile.am
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -5,7 +5,9 @@
         test/test_tools.h
 
 check_PROGRAMS += \
+	test/digraph_test \
         test/dim_test \
+	test/graph_test \
         test/random_test \
         test/test_tools_fail \
         test/test_tools_pass
@@ -13,7 +15,9 @@
 TESTS += $(check_PROGRAMS)
 XFAIL_TESTS += test/test_tools_fail$(EXEEXT)
 
+test_digraph_test_SOURCES = test/digraph_test.cc
 test_dim_test_SOURCES = test/dim_test.cc
+test_graph_test_SOURCES = test/graph_test.cc
 test_random_test_SOURCES = test/random_test.cc
 test_test_tools_fail_SOURCES = test/test_tools_fail.cc
 test_test_tools_pass_SOURCES = test/test_tools_pass.cc