diff --git a/packages/avr-libc/2.2.1/chksum b/packages/avr-libc/2.2.1/chksum
new file mode 100644
index 00000000..f9b06be0
--- /dev/null
+++ b/packages/avr-libc/2.2.1/chksum
@@ -0,0 +1,4 @@
+md5 avr-libc-2.2.1.tar.bz2 400bef303b53e45e0e30d2a617c60a79
+sha1 avr-libc-2.2.1.tar.bz2 9868b17dc67e5c2e87b9fbbe7232d18947638dc5
+sha256 avr-libc-2.2.1.tar.bz2 006a6306cbbc938c3bdb583ac54f93fe7d7c8cf97f9cde91f91c6fb0273ab465
+sha512 avr-libc-2.2.1.tar.bz2 7746c701e9172584bb8923b941958b7ab7ff323bcf1fe6c46a46e3627f74bb750dcaeab23fbb8ba535c7aa2d56347a9d1b7c64098fda505b24e87e116e71f714
diff --git a/packages/avr-libc/2.2.1/version.desc b/packages/avr-libc/2.2.1/version.desc
new file mode 100644
index 00000000..e69de29b
diff --git a/packages/avr-libc/package.desc b/packages/avr-libc/package.desc
index 24c75958..aadb3b2b 100644
--- a/packages/avr-libc/package.desc
+++ b/packages/avr-libc/package.desc
@@ -1,4 +1,4 @@
 repository='git https://github.com/avrdudes/avr-libc.git'
-mirrors='http://download.savannah.gnu.org/releases/avr-libc'
+mirrors='http://download.savannah.gnu.org/releases/avr-libc https://github.com/avrdudes/avr-libc/releases/download/avr-libc-$(echo ${CT_AVR_LIBC_VERSION} | tr '.' '_')-release'
 archive_formats='.tar.bz2'
 signature_format='packed/.sig'