1 files changed, 2 insertions, 0 deletions
diff --git a/UPGRADING b/UPGRADING
index 9fdfe5b6bb..c2e425ef11 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -662,6 +662,8 @@ PHP 8.0 UPGRADE NOTES
   . deflate_init() will now return a DeflateContext object rather than a
     resource. Return value checks using is_resource() should be replaced with
     checks for `false`.
+  . zlib.output_compression is no longer automatically disabled for
+    Content-Type: image/*.
 
 ========================================
 2. New Features