diff --git a/webpage_contents/_quarto.yml b/webpage_contents/_quarto.yml
index 6c8843cdaf4d0cb1b241dc6b8bca929f13be8afd..9aed6cb65e42ad7a4fdd25106d7515b820110cba 100644
--- a/webpage_contents/_quarto.yml
+++ b/webpage_contents/_quarto.yml
@@ -8,9 +8,9 @@ book:
     sidebar: 
         logo: images/Logo_fluidDynamicsCNS.png 
     chapters:        
-      - index.qmd                
-      - content_glossary.qmd             
-      - content_metadata_tables.qmd                   
+      - index.md                
+      - content_glossary.md             
+      - content_metadata_tables.md                   
     
 format: 
     html: