diff --git a/requirements.txt b/requirements.txt
index 6b8caacb..942e58b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 zc.buildout==5.1.1
 zope.interface==8.1.1
-zope.testrunner>=5,<8
+zope.testrunner>=5,<9
diff --git a/setup.py b/setup.py
index 8feb4be4..6175d698 100644
--- a/setup.py
+++ b/setup.py
@@ -74,7 +74,7 @@ def read(path):
             "pytz",
             "zc.customdoctests>=1.0.1,<2",
             "zope.testing>=4,<7",
-            "zope.testrunner>=5,<8",
+            "zope.testrunner>=5,<9",
         ],
     },
     python_requires=">=3.6",