diff --git a/pyproject.toml b/pyproject.toml
index a52fc9b6..f352a83d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ dependencies = [
     "defusedxml == 0.7.1",
     "fastapi == 0.77.1",
     "jinja2 == 3.1.2",
-    "openai >= 0.27.0",
+    "openai >= 0.27.0, < 1.0.0",
     "tiktoken >= 0.3.2",
     "tenacity >= 8.2.2",
     "pillow == 9.3.0",