diff --git a/setup.py b/setup.py
index f0e15c6..e3e26df 100644
--- a/setup.py
+++ b/setup.py
@@ -61,6 +61,7 @@ def get_readme():
             'opensesame_plugins/parallel_port_trigger_init/parallel_port_trigger_init.py',
             'opensesame_plugins/parallel_port_trigger_init/info.yaml',
             'opensesame_plugins/parallel_port_trigger_init/inpout32.dll',
+            'opensesame_plugins/parallel_port_trigger_init/inpoutx64.dll',
             ]
         ),
         ('share/opensesame_plugins/parallel_port_trigger_send',