diff --git a/README.md b/README.md
index 630038c..e91f7fb 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ The code with simulator_old.py is tested with the following environment:
   - Scipy       1.6.0
   - Matplotlib  3.3.6
   
-Update: we modify the code to work with pytorch 1.10 and beyond. Please use simulator.py. Nothing else has changed. 
+**Update: we modify the code to work with pytorch 1.10 and beyond. Please use simulator.py. Nothing else has changed. **
 
 If you find our work helpful in your research, please consider cite our paper