diff --git a/README.md b/README.md
index a36a25e2..f9b1670e 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ PhpSpreadsheet is a library written in pure PHP and providing a set of classes t
  * PHP extension php_xml enabled
  * PHP extension php_gd2 enabled (optional, but required for exact column width autocalculation)
 
-*Note:* PHP 5.6.29 has [a bug](https://bugs.php.net/bug.php?id=735300) that
+*Note:* PHP 5.6.29 has [a bug](https://bugs.php.net/bug.php?id=73530) that
 prevents SQLite3 caching to work correctly. Use a newer (or older) versions of
 PHP if you need SQLite3 caching.
 
diff --git a/docs/index.md b/docs/index.md
index fb0e1ecd..847a4ee6 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -18,7 +18,7 @@ The following software is required to develop using PhpSpreadsheet:
 -   PHP extension php\_xml enabled
 -   PHP extension php\_gd2 enabled (if not compiled in)
 
-*Note:* PHP 5.6.29 has [a bug](https://bugs.php.net/bug.php?id=735300) that
+*Note:* PHP 5.6.29 has [a bug](https://bugs.php.net/bug.php?id=73530) that
 prevents SQLite3 caching to work correctly. Use a newer (or older) versions of
 PHP if you need SQLite3 caching.