diff --git a/bin/build-distro b/bin/build-distro
index 7f76ecdd0..d307877c5 100755
--- a/bin/build-distro
+++ b/bin/build-distro
@@ -53,3 +53,8 @@ fi
 
 sudo rm -Rf rootfs
 echo "${SERIAL}" > serial
+
+# Calculate checksums for all files within a directory.
+for file in *; do
+    sha256sum "${file}" >> SHA265SUMS
+done