--- 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 zip zlib zstd
+tools-y += crc32sum
 tools-$(BUILD_B43_TOOLS) += b43-tools
 tools-$(BUILD_ISL) += isl
 tools-$(BUILD_TOOLCHAIN) += expat gmp libelf mpc mpfr