diff --git a/sys-libs/zlib/zlib-1.2.11-r4.ebuild b/sys-libs/zlib/zlib-1.2.11-r4.ebuild
index bc2fe9834ee22..f81dba33f73c2 100644
--- a/sys-libs/zlib/zlib-1.2.11-r4.ebuild
+++ b/sys-libs/zlib/zlib-1.2.11-r4.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -14,6 +14,7 @@ CYGWINPATCHES=(
 DESCRIPTION="Standard (de)compression library"
 HOMEPAGE="https://zlib.net/"
 SRC_URI="https://zlib.net/${P}.tar.gz
+	https://zlib.net/fossils/${P}.tar.gz
 	http://www.gzip.org/zlib/${P}.tar.gz
 	http://www.zlib.net/current/beta/${P}.tar.gz
 	elibc_Cygwin? ( ${CYGWINPATCHES[*]} )"
diff --git a/sys-libs/zlib/zlib-1.2.11-r5.ebuild b/sys-libs/zlib/zlib-1.2.11-r5.ebuild
index 5173a430e69f0..c24cdc4a35520 100644
--- a/sys-libs/zlib/zlib-1.2.11-r5.ebuild
+++ b/sys-libs/zlib/zlib-1.2.11-r5.ebuild
@@ -14,6 +14,7 @@ CYGWINPATCHES=(
 DESCRIPTION="Standard (de)compression library"
 HOMEPAGE="https://zlib.net/"
 SRC_URI="https://zlib.net/${P}.tar.gz
+	https://zlib.net/fossils/${P}.tar.gz
 	http://www.gzip.org/zlib/${P}.tar.gz
 	http://www.zlib.net/current/beta/${P}.tar.gz
 	elibc_Cygwin? ( ${CYGWINPATCHES[*]} )"
diff --git a/sys-libs/zlib/zlib-1.2.12-r1.ebuild b/sys-libs/zlib/zlib-1.2.12-r1.ebuild
index 267b24c0d1489..425c0f30bdb5b 100644
--- a/sys-libs/zlib/zlib-1.2.12-r1.ebuild
+++ b/sys-libs/zlib/zlib-1.2.12-r1.ebuild
@@ -15,6 +15,7 @@ CYGWINPATCHES=(
 DESCRIPTION="Standard (de)compression library"
 HOMEPAGE="https://zlib.net/"
 SRC_URI="https://zlib.net/${P}.tar.gz
+	https://zlib.net/fossils/${P}.tar.gz
 	https://www.gzip.org/zlib/${P}.tar.gz
 	https://www.zlib.net/current/beta/${P}.tar.gz
 	verify-sig? ( https://zlib.net/${P}.tar.gz.asc )
diff --git a/sys-libs/zlib/zlib-1.2.12-r2.ebuild b/sys-libs/zlib/zlib-1.2.12-r2.ebuild
index ca6e222f45cdc..166bfbad0465c 100644
--- a/sys-libs/zlib/zlib-1.2.12-r2.ebuild
+++ b/sys-libs/zlib/zlib-1.2.12-r2.ebuild
@@ -16,6 +16,7 @@ CYGWINPATCHES=(
 DESCRIPTION="Standard (de)compression library"
 HOMEPAGE="https://zlib.net/"
 SRC_URI="https://zlib.net/${P}.tar.gz
+	https://zlib.net/fossils/${P}.tar.gz
 	https://www.gzip.org/zlib/${P}.tar.gz
 	https://www.zlib.net/current/beta/${P}.tar.gz
 	verify-sig? ( https://zlib.net/${P}.tar.gz.asc )