diff --git a/pyproject.toml b/pyproject.toml
index 1e91e07..95164e8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ Documentation = "https://crossflow.readthedocs.io/"
 
 [project.optional-dependencies]
 testing = [
-    "pytest==8.2.2",
+    "pytest==9.1.1",
     "pytest-cov==5.0.0",
     "pytest-sugar==1.0.0"
 ]