diff --git a/pyproject.toml b/pyproject.toml
index 3580d29649..f7f0ba5ccb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,6 @@ dependencies = [
   "onnx==1.16.1",
   "onnxruntime==1.19.2",
   "opencv-python==4.9.0.80",
-  "pytorch-lightning",
   "safetensors",
   # sentencepiece is required to load T5TokenizerFast (used by FLUX).
   "sentencepiece==0.2.0",