diff --git a/requirements-dev.txt b/requirements-dev.txt
index e742c0f..ed714b1 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,7 +1,7 @@
 # Test and static-analysis dependencies. Install with:
 #   pip install -r requirements.txt -r requirements-dev.txt
 -r requirements.txt
-pytest>=8.0
+pytest>=9.1.1
 pytest-asyncio>=0.24
 # Pinned: a new release of either can start failing CI on unchanged code.
 ruff==0.16.8