diff --git a/modoboa_installer/scripts/radicale.py b/modoboa_installer/scripts/radicale.py
index c49f898..333387d 100644
--- a/modoboa_installer/scripts/radicale.py
+++ b/modoboa_installer/scripts/radicale.py
@@ -31,7 +31,7 @@ class Radicale(base.Installer):
         """Prepare a dedicated virtualenv."""
         python.setup_virtualenv(
             self.venv_path, sudo_user=self.user, python_version=3)
-        packages = ["Radicale<3", "radicale-dovecot-auth", "pytz"]
+        packages = ["Radicale==2.1.12", "radicale-dovecot-auth", "pytz"]
         python.install_packages(packages, self.venv_path, sudo_user=self.user)
         # python.install_package_from_repository(
         #     "radicale-storage-by-index",