diff --git a/README.md b/README.md
index 9f4ea2a23c256be8bdbc92dbc3dd9783f71a5455..d439b1d4da3d89243e5536cab2618183632690c0 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ A tutorial to create a conda environment with all dependencies is available here
     
 Download the apptainer container:
  
-`apptainer pull --arch amd64 --name epeak.img  library://rlegendre/epeak/epeak:2.0` 
+`apptainer pull --arch amd64 --name epeak.sif  library://rlegendre/epeak/epeak:2.0` 
 
 > Note: Please configure apptainer before to pull the image.