diff --git a/pyproject.toml b/pyproject.toml
index a5efc7d..c25ec43 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ server = ["fastapi>=0.105.0,<1.0.0", "uvicorn>=0.20.0,<1.0.0"]
 langchain = ["langchain>=0.1.0,<0.2.0"]
 qdrant = ["qdrant-client>=1.9.0,<2.0.0"]
 chromadb = ["chromadb>=0.5.0,<1.0.0"]
-sentence-transformers = ["sentence-transformers>=2.3.0,<3.0.0"]
+sentence-transformers = ["sentence-transformers>=2.3.0,<4.0.0"]
 rag-default = ["PyPDF2>=3.0.0,<4.0.0", "beautifulsoup4>=4.12.0,<5.0.0", "requests>=2.26.0,<3.0.0", "python-docx>=1.0.0,<2.0.0"]
 vertexai = ["google-cloud-aiplatform>=1.40.0,<2.0.0"]
 litellm = ["litellm>=1.30.0,<2.0.0"]