diff --git a/SPECS/zlib.spec b/SPECS/zlib.spec
index 629d49f..6e95c50 100644
--- a/SPECS/zlib.spec
+++ b/SPECS/zlib.spec
@@ -8,7 +8,7 @@ Summary: Compression and decompression library
 License: zlib and Boost
 URL: https://www.zlib.net/
 
-Source: https://www.zlib.net/zlib-%{version}.tar.xz
+Source: https://www.zlib.net/fossils/zlib-%{version}.tar.gz
 # https://github.com/madler/zlib/pull/210
 Patch0: zlib-1.2.5-minizip-fixuncrypt.patch
 # resolves: #805113