diff --git a/sources b/sources
index 1155232..ebbfd4d 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (Cython-0.29.21.tar.gz) = 2c0c3e3fff07106eb98862f71cd5dec9ff29460cf9b9e4de74537ca5e033f7523989beb5fbdc14723beaf94a535976f75c803e791b87e017961d9694b8c37679
+SHA1 (Cython-0.29.21.tar.gz) = 718dcfee83132421e2df4eb6fa0ef7f3917bf7b9