diff --git a/ext/zlib-wdk/LICENSE.ZLIB b/ext/zlib-wdk/LICENSE.ZLIB
new file mode 100644
index 00000000..a62a5d7b
--- /dev/null
+++ b/ext/zlib-wdk/LICENSE.ZLIB
@@ -0,0 +1,29 @@
+/* zlib.h -- interface of the 'zlib' general purpose compression library
+  version 1.2.3, July 18th, 2005
+
+  Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+
+  The data format used by the zlib library is described by RFCs (Request for
+  Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt
+  (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
+*/
diff --git a/ext/zlib-wdk/install.props b/ext/zlib-wdk/install.props
index aa7c7dfd..7e419ff1 100644
--- a/ext/zlib-wdk/install.props
+++ b/ext/zlib-wdk/install.props
@@ -18,6 +18,7 @@
       copy $(SolutionDir)x86\ZlibDllRelease\zlibwapi.lib $(SolutionDir)x86\dist\lib
       copy $(SolutionDir)x86\ZlibStatRelease\zlibstat.lib $(SolutionDir)x86\dist\lib
       copy $(SolutionDir)zlibvc.def $(SolutionDir)x86\dist\lib
+	  copy $(SolutionDir)LICENSE.ZLIB $(SolutionDir)x86\dist
     </ZlibDoInstall32>
     <ZlibDoInstall64>
       mkdir $(SolutionDir)x64\dist
@@ -35,6 +36,7 @@
       copy $(SolutionDir)x64\ZlibDllRelease\zlibwapi.lib $(SolutionDir)x64\dist\lib
       copy $(SolutionDir)x64\ZlibStatRelease\zlibstat.lib $(SolutionDir)x64\dist\lib
       copy $(SolutionDir)zlibvc.def $(SolutionDir)x64\dist\lib
+	  copy $(SolutionDir)LICENSE.ZLIB $(SolutionDir)x86\dist
     </ZlibDoInstall64>
   </PropertyGroup>
   <ItemDefinitionGroup>