diff --git a/setup.cfg b/setup.cfg
index c4ae93ac82f9cb95c62808094828edd783ce255d..a8cbe24bd8f9c65de078dce7919ae334ecc1d461 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -29,3 +29,12 @@ packages =
     _zkapauthorizer
     _zkapauthorizer.tests
     twisted.plugins
+
+install_requires =
+    attrs
+    zope.interface
+    aniso8601
+    privacypass
+    twisted
+    tahoe-lafs
+    treq