diff --git a/sample-app/requirements-dev.txt b/sample-app/requirements-dev.txt
index 889f646..6d3db07 100644
--- a/sample-app/requirements-dev.txt
+++ b/sample-app/requirements-dev.txt
@@ -1,5 +1,5 @@
 # Dev/test dependencies (not shipped in the runtime image).
 -r requirements.txt
-pytest==8.3.3
+pytest==9.1.1
 pytest-cov==5.0.0
 ruff==0.6.9