diff --git a/sys-libs/zlib/patches/zlib-1.3.patchset b/sys-libs/zlib/patches/zlib-1.3.1.patchset
similarity index 100%
rename from sys-libs/zlib/patches/zlib-1.3.patchset
rename to sys-libs/zlib/patches/zlib-1.3.1.patchset
diff --git a/sys-libs/zlib/zlib-1.3.recipe b/sys-libs/zlib/zlib-1.3.1.recipe
similarity index 96%
rename from sys-libs/zlib/zlib-1.3.recipe
rename to sys-libs/zlib/zlib-1.3.1.recipe
index ee5ec1ec5..3a7a0a1fa 100644
--- a/sys-libs/zlib/zlib-1.3.recipe
+++ b/sys-libs/zlib/zlib-1.3.1.recipe
@@ -14,7 +14,7 @@ COPYRIGHT="1995-2017 Jean-loup Gailly and Mark Adler"
 LICENSE="Zlib"
 REVISION="3"
 SOURCE_URI="https://zlib.net/fossils/zlib-$portVersion.tar.gz"
-CHECKSUM_SHA256="ff0ba4c292013dbc27530b3a81e1f9a813cd39de01ca5e0f8bf355702efa593e"
+CHECKSUM_SHA256="9a93b2b7dfdac77ceba5a558a580e74667dd6fede4585b91eefb60f03b72df23"
 PATCHES="zlib-$portVersion.patchset"
 
 ARCHITECTURES="all"