diff --git a/setup.cfg b/setup.cfg
index 59a8a03..149b5d6 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -23,6 +23,11 @@ classifier =
 keywords =
     scripting, automation, expect, pexpect, wexpect
 
+[options]
+install_requires =
+    pywin32 >= 220;platform_system=='Windows'
+    psutil >= 5.0.0
+
 [options.extras_require]
 test =
     coverage