diff --git a/pyproject.toml b/pyproject.toml
index 0134a30..77fcb28 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ dependencies = [
 [project.optional-dependencies]
 train = [
     "unsloth[colab-new]>=2024.8",
-    "transformers>=4.40",
+    "transformers>=5.5.3",
     "trl>=0.8",
     "torch>=2.0",
     "bitsandbytes>=0.43",