diff --git a/pyproject.toml b/pyproject.toml
index 46dac83..eeacf74 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dependencies = [
 [project.optional-dependencies]
 openai = ["openai>=1.30"]
 validation = ["jsonschema>=4.0"]
-redis = ["redis>=5.0,<8.0"]
+redis = ["redis>=5.0,<9.0"]
 http = ["httpx>=0.27"]
 dev = [
     "pytest>=8.0",