diff --git a/steps/improve/update_checksums.sh b/steps/improve/update_checksums.sh
new file mode 100755
index 0000000..0c4f61b
--- /dev/null
+++ b/steps/improve/update_checksums.sh
@@ -0,0 +1,7 @@
+# SPDX-FileCopyrightText: 2023 Eduardo Sánchez Muñoz <eduardosm-dev@e64.io>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+pushd /external/repo
+sha256sum -- * | tee "${SRCDIR}/SHA256SUMS.pkgs"
+popd
diff --git a/steps/manifest b/steps/manifest
index a73776f..b84e273 100644
--- a/steps/manifest
+++ b/steps/manifest
@@ -181,3 +181,4 @@ build: gcc-10.4.0
 build: binutils-2.41
 build: gcc-13.1.0
 improve: null_time ( FORCE_TIMESTAMPS == True )
+improve: update_checksums ( UPDATE_CHECKSUMS == True )