diff --git a/openwrt_patches-21.02/122-add-crc32sum-utility.patch b/openwrt_patches-21.02/122-add-crc32sum-utility.patch
new file mode 100644
index 0000000..85a6462
--- /dev/null
+++ b/openwrt_patches-21.02/122-add-crc32sum-utility.patch
@@ -0,0 +1,10 @@
+--- a/tools/Makefile
++++ b/tools/Makefile
+@@ -26,6 +26,7 @@ tools-y += e2fsprogs fakeroot findutils firmware-utils flex gengetopt
+ tools-y += libressl libtool lzma m4 make-ext4fs missing-macros mkimage
+ tools-y += mklibs mm-macros mtd-utils mtools padjffs2 patch-image
+ tools-y += patchelf pkgconf quilt squashfskit4 sstrip xxd zip zlib zstd
++tools-y += crc32sum
+ tools-$(BUILD_B43_TOOLS) += b43-tools
+ tools-$(BUILD_ISL) += isl
+ tools-$(BUILD_TOOLCHAIN) += expat gmp libelf mpc mpfr