diff --git a/test/data/routing/ngen_routing_config_unit_test.yaml b/test/data/routing/ngen_routing_config_unit_test.yaml
index 95beb10156..80f4a40aba 100644
--- a/test/data/routing/ngen_routing_config_unit_test.yaml
+++ b/test/data/routing/ngen_routing_config_unit_test.yaml
@@ -36,7 +36,7 @@ compute_parameters:
     compute_kernel         : V02-structured
     assume_short_ts        : True
     subnetwork_target_size : 10000
-    cpu_pool               : 36
+    cpu_pool               : 1
     restart_parameters:
         #----------
         #wrf_hydro_channel_restart_file: restart/HYDRO_RST.2020-08-26_00:00_DOMAIN1