diff --git a/src/HtmlSanitizer/ReadmeImageSanitizer.php b/src/HtmlSanitizer/ReadmeImageSanitizer.php
index 444b98d73..4d6866304 100644
--- a/src/HtmlSanitizer/ReadmeImageSanitizer.php
+++ b/src/HtmlSanitizer/ReadmeImageSanitizer.php
@@ -34,7 +34,7 @@ public function sanitizeAttribute(string $element, string $attribute, string $va
         }
 
         if (str_starts_with($value, 'https://private-user-images.githubusercontent.com/')) {
-            return Preg::replace('{^https://private-}', 'https://', $value, 1);
+            return Preg::replace('{^https://private-user-images.githubusercontent.com/\d+/\d+-([a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12})\.\w+\?.*$}', 'https://github.com/user-attachments/assets/$1', $value, 1);
         }
 
         return $value;
diff --git a/src/HtmlSanitizer/ReadmeLinkSanitizer.php b/src/HtmlSanitizer/ReadmeLinkSanitizer.php
index 8bdae3db6..42476dfac 100644
--- a/src/HtmlSanitizer/ReadmeLinkSanitizer.php
+++ b/src/HtmlSanitizer/ReadmeLinkSanitizer.php
@@ -2,6 +2,7 @@
 
 namespace App\HtmlSanitizer;
 
+use Composer\Pcre\Preg;
 use Symfony\Component\HtmlSanitizer\HtmlSanitizerConfig;
 use Symfony\Component\HtmlSanitizer\Visitor\AttributeSanitizer\AttributeSanitizerInterface;
 
@@ -59,6 +60,10 @@ public function sanitizeAttribute(string $element, string $attribute, string $va
             return 'https://gitlab.com/'.$this->ownerRepo.'/-/blob/HEAD/'.$this->basePath.$value;
         }
 
+        if (str_starts_with($value, 'https://private-user-images.githubusercontent.com/')) {
+            return Preg::replace('{^https://private-user-images.githubusercontent.com/\d+/\d+-([a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12})\.\w+\?.*$}', 'https://github.com/user-attachments/assets/$1', $value, 1);
+        }
+
         return $value;
     }
 }