diff --git a/ffmpeg.spec b/ffmpeg.spec
index f5aaf7f778c4613e47abcc24f893bd9ba85d7e58..a9628aed29357fe567e59fc68fb30f7f16d2b977 100644
--- a/ffmpeg.spec
+++ b/ffmpeg.spec
@@ -62,7 +62,7 @@
 Summary:        Digital VCR and streaming server
 Name:           ffmpeg%{?flavor}
 Version:        6.1.1
-Release:        14
+Release:        15
 License:        GPL-3.0-or-later
 URL:            http://ffmpeg.org/
 Source0:        http://ffmpeg.org/releases/ffmpeg-%{version}.tar.xz
@@ -297,6 +297,7 @@ This package contains development files for %{name}
     --enable-shared \\\
     %{!?_without_gpl:--enable-gpl} \\\
     --disable-debug \\\
+    --enable-lto \\\
     --disable-stripping \\\
     %{?with_compiler_clang:--cc=clang --cxx=clang --host-cc=clang}
 
@@ -407,6 +408,9 @@ install -pm755 tools/qt-faststart %{buildroot}%{_bindir}
 
 
 %changelog
+* Tue Oct 29 2024 Funda Wang <fundawang@yeah.net>  - 6.1.1-15
+- use lto flag
+
 * Wed Sep 18 2024 happyworker <208suo@208suo.com> - 6.1.1-14
 - CVE-2023-49501.patch