diff --git a/libsndfile-1.0.31.tar.bz2 b/libsndfile-1.0.31.tar.bz2
index 683f561161d31236fc7d49aeaf1f4bd412296171..99e40644388d636220858d2f9ebbad79a10dfb26 100644
Binary files a/libsndfile-1.0.31.tar.bz2 and b/libsndfile-1.0.31.tar.bz2 differ
diff --git a/libsndfile.spec b/libsndfile.spec
index 1d869da0bda16af801faa06c1fe9105b471b945a..f49981ae6357ef98ac287c226699150c0f9679e8 100644
--- a/libsndfile.spec
+++ b/libsndfile.spec
@@ -116,6 +116,9 @@ LD_LIBRARY_PATH=$PWD/src/.libs make check
 %{_mandir}/man1/sndfile-salvage.1*
 
 %changelog
+* Wed Dec 28 2022 liying <liying_1@chinatelecom.cn> - 1.0.31-2
+- Marked unimplemented dither enums in the header file as such.
+
 * Mon May 16 2022 zhouwenpei <zhouwenpei1@h-partners.com> - 1.0.31-2
 - fix CVE-2021-4156