diff --git a/tox.ini b/tox.ini
index 1d072f6f..feb328e0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -26,9 +26,14 @@ python =
     3.10: py310
 
 [testenv]
-deps = pytest
+deps =
+    pytest
+    pytest-timeout
 commands = {envpython} run_tests
 setenv =
     GIT_AUTHOR_NAME = Repo test author
     GIT_COMMITTER_NAME = Repo test committer
     EMAIL = repo@gerrit.nodomain
+
+[pytest]
+timeout = 300