diff --git a/sources b/sources
index dabb625..939bfcb 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA1 (asio-28d9b8d.tar.gz) = 823ce7ab96e3b8e6457a96263a9c865664971e7e
+SHA512 (asio-28d9b8d.tar.gz) = decc154ab5a3da00adadc7c10889e0fd18a62a3c131d63ac5981d93039d966ecdc62980b9079180f03e198bf3149be781ef30005a9f32f3c2d5d155e3a5f50f2