diff --git a/SAS/TriggerServices/test/CMakeLists.txt b/SAS/TriggerServices/test/CMakeLists.txt
index eaaf43f06008608fa9787cb4c8b577ebdc2bc99c..28f8ef87bd41a77708b4748519cf7c7d3c081b40 100644
--- a/SAS/TriggerServices/test/CMakeLists.txt
+++ b/SAS/TriggerServices/test/CMakeLists.txt
@@ -1,6 +1,8 @@
 include(LofarCTest)
 include(FindPythonModule)
 
+find_python_module(dateutil)
+
 lofar_add_test(t_trigger_service)
 lofar_add_test(t_trigger_cancellation_service)
 lofar_add_test(t_voevent_listener)