diff --git a/sources b/sources
index e76198f..bbc4996 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA1 (r3.6.4.tar.gz) = 3a7089619035cdd0e70a9f0b0f6a532b9b696eb4
+SHA512 (r3.6.4.tar.gz) = fc8bf670c266317f551c0c7faf75b5c1cf2e05b78c559733c94de52db7e7361d77513585c19b3ef203d8a38dd5bf8f5b9fbf9f875136f39fd736283a30eb9668