diff --git a/mcp-instructions-server/pyproject.toml b/mcp-instructions-server/pyproject.toml
index 78511bc..69e449c 100644
--- a/mcp-instructions-server/pyproject.toml
+++ b/mcp-instructions-server/pyproject.toml
@@ -15,7 +15,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "pytest>=8.0",
+    "pytest>=9.0.3",
     "ruff>=0.8.0",
     "mypy>=1.13.0",
     "types-PyYAML>=6.0.12.20240917",