diff --git a/requirements.txt b/requirements.txt
index 77f46ac..63407e6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,5 @@ gunicorn==23.0.0
 msgpack-python==0.5.6
 pytest==8.3.3
 requests==2.32.3  # only required for try_postcodes
-pytest-cov==5.0.0
+pytest-cov==6.0.0
 sentry-sdk[flask]==2.17.0