diff --git a/setup.cfg b/setup.cfg
index 0e0ebcd8b..773264b1b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -89,6 +89,7 @@ test =
     pytest-cov
     pytest-mock
     pytest-rerunfailures
+    pytest-timeout
     responses != 0.24.0
     vcrpy
 tools=
diff --git a/tox.ini b/tox.ini
index 8c7f6093e..d54eb4439 100644
--- a/tox.ini
+++ b/tox.ini
@@ -42,7 +42,7 @@ changedir = docs
 commands = sphinx-build -E -W -b html source build
 
 [pytest]
-addopts = --tb=short --durations=10
+addopts = --tb=short --durations=10 --timeout=300
 markers =
     integration
     obolibrary