diff --git a/squashfs-tools.spec b/squashfs-tools.spec
index 391ca60..edf7491 100644
--- a/squashfs-tools.spec
+++ b/squashfs-tools.spec
@@ -1,6 +1,6 @@
 Name:     squashfs-tools
 Version:  4.5.1
-Release:  1
+Release:  2
 Summary:  Utility for the squashfs filesystems
 License:  GPLv2+
 URL:      http://squashfs.sourceforge.net/
@@ -19,7 +19,7 @@ and directories.
 %autosetup -n squashfs-tools-%{version} -p1
 
 %build
-CFLAGS="%{optflags}" XZ_SUPPORT=1 LZO_SUPPORT=1 LZMA_XZ_SUPPORT=1 LZ4_SUPPORT=1 ZSTD_SUPPORT=1 \
+CFLAGS="%{optflags} -fPIE -pie -fPIC" XZ_SUPPORT=1 LZO_SUPPORT=1 LZMA_XZ_SUPPORT=1 LZ4_SUPPORT=1 ZSTD_SUPPORT=1 \
 %make_build -C squashfs-tools
 
 %install
@@ -36,6 +36,9 @@ install -D -m 755 squashfs-tools/unsquashfs %{buildroot}%{_sbindir}/unsquashfs
 
 
 %changelog
+* Wed Mar 8 2023 wuguanghao <wuguanghao3@huawei.com> - 4.5.1-2
+- add safe compilation options PIE/pie/PIC
+
 * Sat Aug 13 2022 volcanodragon <linfeilong@huawei.com> - 4.5.1-1
 - update version to 4.5.1