diff --git a/pyproject.toml b/pyproject.toml
index a55baacf..e4b281d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,7 +69,7 @@ testing = [
     "beautifulsoup4",
     "coverage[toml]",
     "defusedxml",  # required by sphinx 7.3 testing utils
-    "pytest>=8,<9",
+    "pytest>=9,<10",
     "pytest-cov",
     "pytest-regressions",
     "pytest-param-files~=0.6.0",
@@ -78,7 +78,7 @@ testing = [
 ]
 testing-docutils = [
     "pygments",
-    "pytest>=8,<9",
+    "pytest>=9,<10",
     "pytest-param-files~=0.6.0",
 ]