diff --git a/zkapauthorizer.nix b/zkapauthorizer.nix
index 8d97d44793f141d092b450f0fb1892014e9400e6..e617ab0d98185f086a1856cf4b294b0de81c669c 100644
--- a/zkapauthorizer.nix
+++ b/zkapauthorizer.nix
@@ -1,4 +1,4 @@
-{ buildPythonPackage, sphinx,
+{ buildPythonPackage, sphinx
 , attrs, zope_interface, aniso8601, twisted, tahoe-lafs, privacypass
 , fixtures, testtools, hypothesis, pyflakes, treq, coverage
 , hypothesisProfile ? null