diff --git a/pyproject.toml b/pyproject.toml
index 4ce61f2498..9f42697e1c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,6 +31,7 @@ dependencies = [
     "scikit_learn>=1.0.2",
     "scipy>=0.0.0",
     "sentence_transformers>=3.0.0",
+    "transformers<=4.50.0",
     "typing-extensions>=4.5.0",
     "torch>1.0.0",
     "tqdm>1.0.0",