diff --git a/README.org b/README.org
index 14cf397..31cc9ee 100644
--- a/README.org
+++ b/README.org
@@ -15,7 +15,7 @@ This book is designed with beginners in mathematics in mind, especially those wh
 - *Edition:* 2024
 
 *** Availability
-- *HTML*: https://paulalesius.github.io/llmath/
+- *HTML*: https://llmath.unnservice.com/
 - *PDF*: #[TODO]
 
 ** Emphasis on R Programming Language
diff --git a/src/banner_facebook1200x630.png b/src/banner_facebook1200x630.png
index aa46033..3e5af06 100644
Binary files a/src/banner_facebook1200x630.png and b/src/banner_facebook1200x630.png differ
diff --git a/src/banner_twitter1200x600.png b/src/banner_twitter1200x600.png
index c846bc1..c4960e8 100644
Binary files a/src/banner_twitter1200x600.png and b/src/banner_twitter1200x600.png differ