diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6d1eb59..200cae5 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
 # Cross-platform development source requirements. Install with:
 #   .venv/bin/python -m pip install -r requirements-dev.txt
-pytest>=8.0
+pytest>=9.1.1
 pytest-mock>=3.15.1
 jsonschema>=4.0
 pip-audit>=2.10.1