diff --git a/openfpga_flow/regression_test_scripts/basic_reg_test.sh b/openfpga_flow/regression_test_scripts/basic_reg_test.sh
index aefc686c8..66dd32d21 100755
--- a/openfpga_flow/regression_test_scripts/basic_reg_test.sh
+++ b/openfpga_flow/regression_test_scripts/basic_reg_test.sh
@@ -110,6 +110,8 @@ echo -e "Testing K4N4 with facturable LUTs";
 run-task basic_tests/k4_series/k4n4_frac_lut --debug --show_thread_logs
 echo -e "Testing K4N4 with asynchronous reset";
 run-task basic_tests/k4_series/k4n4_fracff --debug --show_thread_logs
+echo -e "Testing K4N4 with negative edge clocks";
+run-task basic_tests/k4_series/k4n4_fracff2edge --debug --show_thread_logs
 echo -e "Testing K4N4 with hard adders";
 run-task basic_tests/k4_series/k4n4_adder --debug --show_thread_logs
 echo -e "Testing K4N4 without local routing architecture";
@@ -185,4 +187,4 @@ run-task template_tasks/vtr_benchmarks_template --debug --show_thread_logs
 
 echo -e "Testing create tsk from template and run task"
 create-task _task_copy basic_tests/generate_fabric
-run-task _task_copy
\ No newline at end of file
+run-task _task_copy