diff --git a/Tools/ART/CMakeLists.txt b/Tools/ART/CMakeLists.txt
index ef6eee55e8c1c3b5cb9f16c9a9e821a7f386bced..20bce4ebcfb94952ca09fe7c6da96554db8ba43a 100644
--- a/Tools/ART/CMakeLists.txt
+++ b/Tools/ART/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 #
 # CMake configuration file for the ART package.
 #
@@ -11,6 +11,12 @@ atlas_subdir( ART )
 atlas_depends_on_subdirs( PRIVATE
                           TestPolicy )
 
+# External dependencies:
+find_package( futures )
+find_package( requests )
+find_package( scandir )
+find_package( pyyaml )
+
 # Install files from the package:
 atlas_install_python_modules( python/ART/*.py )
 atlas_install_scripts( scripts/*.py scripts/*.sh )