diff --git a/.gitignore b/.gitignore
index acfb385..6032caa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,4 @@ unbound-1.4.5.tar.gz
 /unbound-1.6.0.tar.gz
 /unbound-1.6.2.tar.gz
 /unbound-1.6.3.tar.gz
+/unbound-1.6.4rc2.tar.gz
diff --git a/sources b/sources
index fdb626c..9ac2bf1 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (unbound-1.6.3.tar.gz) = 1d84fcc4c4b2a2b5cce6540cf252ff964f4acae3b6567c61cee69b76c6cee3e00270b1f7cc7ad83a2754afb33cc199c8b6e8116e5b587811714398b1d34de8a3
+SHA512 (unbound-1.6.4rc2.tar.gz) = 05e8bd6a24042a63866c262fdb62e3829ab5741ca836f7aed10ea4d4eccdcf1a1ae91855845054b3954fcd2f425eb982b496bf4e3fbef4b78fe15660b0cd5b21