diff --git a/.gitignore b/.gitignore
index 040130a..c39b63d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@ asio-1.4.1.tar.gz
 /asio-1.24.0.tar.gz
 /asio-1.26.0.tar.bz2
 /asio-1.28.0.tar.bz2
+/asio-1.28.1.tar.bz2
diff --git a/sources b/sources
index 2b963ac..08d1c1a 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (asio-1.28.0.tar.bz2) = b3fa23caa4cbf1e374fade97102adb22a32c68bd4b050474987c065b516fdf042d46842c41ac94e71458f402fae2d05bc8f617ee523ffb6a74ef33d214e9acd5
+SHA512 (asio-1.28.1.tar.bz2) = fadd7748675743ba9110f873bf57f2400a5c9c0dc03c1d6cd7f0988bc70ccbbff6cb6140f5dd236d2d874fc82a6f216406e8892808e915aae5119fe9d95743de