diff --git a/pyproject.toml b/pyproject.toml
index ffb5ca7..88f0b7a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ dependencies = ["specklepy==3.1.0",
 [project.optional-dependencies]
 dev = [
     "mypy==1.13.0",
-    "pytest==7.4.4",
+    "pytest==9.0.3",
     "ruff==0.11.12",
 
 ]