diff --git a/.mailman.metadata b/.mailman.metadata
new file mode 100644
index 0000000..273ec01
--- /dev/null
+++ b/.mailman.metadata
@@ -0,0 +1 @@
+40fe97974a6f0805a01d55c6944565f238778238 mailman-2.1.29.tgz
diff --git a/sources b/sources
index ed589cf..55e8e06 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA1 (mailman-2.1.29.tgz) = 40fe97974a6f0805a01d55c6944565f238778238
+SHA512 (mailman-2.1.29.tgz) = ed25179a4580092629890664c5502908b20e326c2ed06ad4e597fb4e8de84076c369ecd7a272be5ed8a1cb4479413d0e004d87804de763ee850e4d04d9a83376