diff --git a/groups/221.native_packages_dev.group b/groups/221.native_packages_dev.group
index 1c0ee59..e071117 100644
--- a/groups/221.native_packages_dev.group
+++ b/groups/221.native_packages_dev.group
@@ -5,7 +5,7 @@ GROUP_TARGET="native_packages";
 NATIVE_PACKAGES_PACKAGES="$(rtl_lconcat "${NATIVE_PACKAGES_PACKAGES}" "
 bison chicken cparser diffutils flex gdb lua lunix m4 make mandoc nasm
 patch patchutils perl python2 python3 ruby sbsigntools smallbasic tk")";
-: ${PKG_BISON_SHA256SUM:=67ff4539783569884cbecaf781ceb665fc92e4ef3cf44c507a49d06a87421398};
+: ${PKG_BISON_SHA256SUM:=06db793651de9dd5f0a85a6fe4bdbca413c0806bf2432377523da96ca0b4b73d};
 : ${PKG_BISON_VERSION:=3.6.3};
 : ${PKG_BISON_URL:=https://ftp.gnu.org/gnu/bison/bison-${PKG_BISON_VERSION}.tar.xz};
 : ${PKG_CHICKEN_SHA256SUM:=e3dc2b8f95b6a3cd59c85b5bb6bdb2bd9cefc45b5d536a20cad74e3c63f4ad89};