diff --git a/cryfs.spec b/cryfs.spec
index 4d2ae8cb9c2fb97f62bdd5b633048f088dd57435..024a304249bf3688f8ee1c26839ebc94e216a18c 100644
--- a/cryfs.spec
+++ b/cryfs.spec
@@ -1,10 +1,10 @@
 %define __cmake_builddir $(pwd)
-%global optflags %{optflags} -O3 -fPIC -I%{_includedir}/libunwind
+%global optflags %{optflags} -O2 -fPIC -I%{_includedir}/libunwind
 
 Summary:	Cryptographic filesystem for the cloud
 Name:		cryfs
 Version:	0.9.10
-Release:	3
+Release:	4
 License:	LGPLv3+
 Group:		File tools
 Url:		https://github.com/cryfs/cryfs
@@ -57,6 +57,9 @@ export LDFLAGS="%{__global_ldflags} -lboost_thread -lboost_program_options -lboo
 %{_mandir}/man?/cryfs*
 
 %changelog
+* Tue Sep 16 2025 mahailiang <mahailiang@uniontech.com> - 0.9.10-4
+- downgrade optimize level to fix cryfs dump
+
 * Wed Feb 19 2025 pangqing <pangqing@uniontech.com> - 0.9.10-3
 - fix build error