diff --git a/setup.py b/setup.py
index ab322414..e5d90674 100755
--- a/setup.py
+++ b/setup.py
@@ -46,7 +46,9 @@
         "pytest",
         "pytest-coverage",
         "coverage",
-        "xandikos",
+        "xandikos==0.2.8",
+        "dulwich==0.20.50",
+        "radicale",
         "sphinx",
     ]