Update README.md

README.md

@@ -242,7 +242,7 @@ ModChemBERT is a ModernBERT-based chemical language model (CLM), trained on SMIL
 Install the `transformers` library starting from v4.56.1:
 
 ```bash
-pip install -U transformers>=4.56.1
+pip install -U "transformers>=4.56.1,<5.0.0"
 ```
 
 ### Load Model