diff --git a/docs/releasenotes/5.4.1.rst b/docs/releasenotes/5.4.1.rst
index 7b8b5804f..350195f2c 100644
--- a/docs/releasenotes/5.4.1.rst
+++ b/docs/releasenotes/5.4.1.rst
@@ -25,3 +25,12 @@ The addition of limited APNG support to the PNG plugin also overwrote the MIME
 type for PNG files, causing "image/apng" to be returned as the MIME type of
 both APNG and PNG files. This has been fixed so the MIME type of PNG files is
 "image/png".
+
+File Closing
+^^^^^^^^^^^^
+
+A regression caused an unsupported image file to report a
+``ValueError: seek of closed file`` exception instead of an ``OSError``. This
+has been fixed by ensuring that image plugins only close their internal `__fp`
+if they are not the same as ImageFile's `fp`, allowing each to manage their own
+file pointers.