diff --git a/packages.ent b/packages.ent
index 087deb3a1..92bc3082a 100644
--- a/packages.ent
+++ b/packages.ent
@@ -764,10 +764,14 @@
 <!ENTITY xz-fin-sbu "0.1 SBU">
 
 <!ENTITY zlib-version "1.3">
-<!ENTITY zlib-size "1266 KB">
-<!ENTITY zlib-url "https://www.zlib.net/zlib-&zlib-version;.tar.xz">
-<!ENTITY zlib-md5 "b49e70aacafacfceb1107943497f5545">
-<!ENTITY zlib-home "https://www.zlib.net/">
+<!ENTITY zlib-size "1,461 KB">
+<!-- DO NOT remove "fossils"!
+     The upstream removes https://zlib.net/zlib-&zlib-version;.tar.xz
+     once a newer version is released EVEN IF there is no security fixes.
+     Unfortunately there is no .xz files in fossils directory.  -->
+<!ENTITY zlib-url "https://zlib.net/fossils/zlib-&zlib-version;.tar.gz">
+<!ENTITY zlib-md5 "60373b133d630f74f4a1f94c1185a53f">
+<!ENTITY zlib-home "https://zlib.net/">
 <!ENTITY zlib-fin-du "6.2 MB">
 <!ENTITY zlib-fin-sbu "less than 0.1 SBU">