diff --git a/setup.cfg b/setup.cfg
index 4d225589..b3d8ad20 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -32,7 +32,7 @@ testing =
     pytest >= 6.1.2
     # mock-services is old and unmaintained. Doesn't work with newer versions
     # of requests-mock. Thus, we have to pin it down.
-    requests-mock < 1.2
+    requests-mock < 1.13
     # Python 3.12 no longer installs `setuptools` in venv
     # but mock-services depends on it for `pkg_resources`
     setuptools