diff --git a/index.php b/index.php
index b181d93..991462b 100644
--- a/index.php
+++ b/index.php
@@ -82,9 +82,9 @@
             </div>
             
             <div class="social-icons">
-                <a href="#" class="icon-button"><i class="fab fa-facebook"></i></a>
-                <a href="#" class="icon-button"><i class="fab fa-youtube"></i></a>
-                <a href="#" class="icon-button"><i class="fab fa-instagram"></i></a>
+                <a href="<?php echo FACEBOOK_URL; ?>" class="icon-button"><i class="fab fa-facebook"></i></a>
+                <a href="<?php echo YOUTUBE_URL; ?>" class="icon-button"><i class="fab fa-youtube"></i></a>
+                <a href="<?php echo INSTAGRAM_URL; ?>" class="icon-button"><i class="fab fa-instagram"></i></a>
                 <a href="#" class="icon-button"><i class="fas fa-ellipsis-h"></i></a>
             </div>
             
@@ -338,10 +338,10 @@
             </div>
             
             <div class="footer-social">
-                <a href="#"><i class="fab fa-facebook"></i></a>
-                <a href="#"><i class="fab fa-youtube"></i></a>
-                <a href="#"><i class="fab fa-instagram"></i></a>
-                <a href="#"><i class="fab fa-tiktok"></i></a>
+                <a href="<?php echo FACEBOOK_URL; ?>"><i class="fab fa-facebook"></i></a>
+                <a href="<?php echo YOUTUBE_URL; ?>"><i class="fab fa-youtube"></i></a>
+                <a href="<?php echo INSTAGRAM_URL; ?>"><i class="fab fa-instagram"></i></a>
+                <a href="<?php echo TWITTER_URL; ?>"><i class="fab fa-twitter"></i></a>
             </div>
             
             <div class="footer-contact">CONTACT</div>