diff --git a/apps/pii/requirements-dev.txt b/apps/pii/requirements-dev.txt
index 4c330d999ae..68a538f5f1d 100644
--- a/apps/pii/requirements-dev.txt
+++ b/apps/pii/requirements-dev.txt
@@ -1,5 +1,5 @@
 # Test-only deps. Unit tests need requirements.txt + this file (no models);
 # integration tests additionally need the models baked into the docker images
 # (see tests/test_integration.py).
-pytest==8.4.1
+pytest==9.0.3
 httpx==0.28.1