diff --git a/0002-set-default-c++17.patch b/0002-set-default-c++17.patch
new file mode 100644
index 0000000000000000000000000000000000000000..e63276c2ba20fb1382dea39ba6afd35108e38dd1
--- /dev/null
+++ b/0002-set-default-c++17.patch
@@ -0,0 +1,29 @@
+From 0204d399d6d088e9e0a786f3a80a8d9ecf23c5d9 Mon Sep 17 00:00:00 2001
+From: Super User <root@localhost.localdomain>
+Date: Mon, 4 Aug 2025 02:32:30 +0000
+Subject: [PATCH] set default c++17
+
+---
+ CMakeLists.txt | 6 +-----
+ 1 file changed, 1 insertion(+), 5 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index a3e8e83..bcea752 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -40,11 +40,7 @@ set (BUILD_DOCS ON CACHE BOOL "Generate doxygen-based documentation")
+ set (BUILD_WITH_SYSTEMD OFF CACHE BOOL "Build with systemd")
+ 
+ # CXX FILAGS
+-if("${QT_VERSION_MAJOR}" STREQUAL "5")
+-  set(CMAKE_CXX_STANDARD 11)
+-else()
+-  set(CMAKE_CXX_STANDARD 17)
+-endif()
++set(CMAKE_CXX_STANDARD 17)
+ if (NOT CMAKE_BUILD_TYPE)
+     set(CMAKE_BUILD_TYPE Release)
+ endif()
+-- 
+2.50.1
+
diff --git a/dtkcore.spec b/dtkcore.spec
index 333774c99531a95375d21613a7381b7b6f9b6d44..198a0f8145867bc9c2810017a9fe465536ce341e 100644
--- a/dtkcore.spec
+++ b/dtkcore.spec
@@ -1,13 +1,14 @@
 %define __cmake_builddir $(pwd)
 Name:           dtkcore
 Version:        5.6.8.2
-Release:        2%{?dist}.02
+Release:        2%{?dist}.03
 Summary:        Deepin tool kit core modules
 License:        LGPL-3.0-or-later
 URL:            https://github.com/linuxdeepin/dtkcore
 Source0:        %{url}/archive/%{version}/%{name}-%{version}.tar.gz
 
 Patch0001:      0001-LSHW-returns-a-multi-element-array-when-querying-mem.patch
+Patch0002:      0002-set-default-c++17.patch 
 
 BuildRequires:  gcc-c++
 #BuildRequires:  annobin
@@ -78,6 +79,9 @@ export PATH=%{_qt5_bindir}:$PATH
 
 
 %changelog
+* Mon Aug 04 2025 pangqing <pangqing@uniontech.com> - 5.6.8.2-2.03
+- set default c++17
+
 * Tue Sep 24 2024 songmingliang <songmingliang@uniontech.com> - 5.6.8.2-2.02
 - fix: make check license successfully