diff --git a/pyproject.toml b/pyproject.toml
index 64affc8556..134bbdba61 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,7 @@ dev = [
   "freezegun==1.5.1",
   "mock==5.2.0",
   "moto[all]==5.1.11",
-  "openapi-schema-validator==0.6.3",
+  "openapi-schema-validator==0.9.0",
   "openapi-spec-validator==0.7.1",
   "prek==0.3.9",
   "pylint==3.3.4",