2 files changed, 10 insertions, 0 deletions
diff --git a/CHANGES.rst b/CHANGES.rst
index a8961ad4..982f59d6 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,9 @@
+v16.0.3
+-------
+
+* :issue:`1722`: Pinned the ``tempora`` dependency against
+  version 1.13 to avoid pulling in namespace packages.
+
 v16.0.2
 -------
 
diff --git a/setup.py b/setup.py
index 5720465f..8ba0421e 100755
--- a/setup.py
+++ b/setup.py
@@ -61,6 +61,9 @@ install_requires = [
     'six>=1.11.0',
     'cheroot>=6.2.4',
     'portend>=2.1.1',
+
+    # temporary workaround for #1722
+    'tempora<1.13',
 ]
 
 extras_require = {
@@ -87,6 +90,7 @@ extras_require = {
         'backports.unittest_mock',
         'path.py',
         'requests_toolbelt',
+        'jaraco.packaging',
     ],
     # Enables memcached session support via `cherrypy[memcached_session]`:
     'memcached_session': ['python-memcached>=1.58'],