diff --git a/contrib/crossrpms/cygwin/i686/Makefile.am b/contrib/crossrpms/cygwin/i686/Makefile.am
index 59012a7590..dd51a7f60e 100644
--- a/contrib/crossrpms/cygwin/i686/Makefile.am
+++ b/contrib/crossrpms/cygwin/i686/Makefile.am
@@ -32,8 +32,8 @@ TERMINFO_VERS = 5.7_20091114-13
 TERMINFO_RPMREL = 0.20100204.0%{?dist}
 include ../terminfo.am
 
-ZLIB_VERS = 1.2.3-3
-ZLIB_RPMREL = 0.20090827.0%{?dist}
+ZLIB_VERS = 1.2.3-10
+ZLIB_RPMREL = 0.20100204.0%{?dist}
 include ../zlib.am
 
 GMP_VERS = 4.2.4-1
diff --git a/contrib/crossrpms/cygwin/i686/i686-pc-cygwin-zlib.spec b/contrib/crossrpms/cygwin/i686/i686-pc-cygwin-zlib.spec
index ebdc65e3d2..8263dbca19 100644
--- a/contrib/crossrpms/cygwin/i686/i686-pc-cygwin-zlib.spec
+++ b/contrib/crossrpms/cygwin/i686/i686-pc-cygwin-zlib.spec
@@ -30,11 +30,11 @@
 %define _host_rpmprefix %{nil}
 %endif
 
-%define zlib_version 1.2.3-3
-%define zlib_rpmvers %{expand:%(echo 1.2.3-3 | tr - _)} 
+%define zlib_version 1.2.3-10
+%define zlib_rpmvers %{expand:%(echo 1.2.3-10 | tr - _)} 
 
 Name:         i686-pc-cygwin-zlib
-Release:      0.20090827.0%{?dist}
+Release:      0.20100204.0%{?dist}
 License:      GPL
 Group:        Development/Tools