diff --git a/src/_zkapauthorizer/tests/fixtures.py b/src/_zkapauthorizer/tests/fixtures.py
index f47877c21432be7f422e1352bfa9c34693b32360..392520c90b82778aeb5879a972c92517dee52ba2 100644
--- a/src/_zkapauthorizer/tests/fixtures.py
+++ b/src/_zkapauthorizer/tests/fixtures.py
@@ -37,6 +37,7 @@ from twisted.python.filepath import (
 from twisted.internet.task import (
     Clock,
 )
+from allmydata import __version__ as allmydata_version
 from allmydata.storage.server import (
     StorageServer,
 )