diff --git a/pyproject.toml b/pyproject.toml
index 5248437..7cda146 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ huggingface-hub = "*"
 transformers = "*"
 
 # Vector DB: Weaviate
-weaviate-client = "^4.13.2"
+weaviate-client = "<4.0.0"
 
 # Embeddings
 openai = "*"  # OpenAIEmbeddings용