diff --git a/indra/cmake/Copy3rdPartyLibs.cmake b/indra/cmake/Copy3rdPartyLibs.cmake
index 5a142f23c9..faf9da8b14 100644
--- a/indra/cmake/Copy3rdPartyLibs.cmake
+++ b/indra/cmake/Copy3rdPartyLibs.cmake
@@ -231,7 +231,6 @@ elseif(LINUX)
         libstacktrace.so
         libtcmalloc.so
         libuuid.so.1
-        libz.so
         libssl.so.0.9.7
        )
 
diff --git a/install.xml b/install.xml
index c76217426c..d5581592ed 100644
--- a/install.xml
+++ b/install.xml
@@ -1447,9 +1447,9 @@ anguage Infrstructure (CLI) international standard</string>
           <key>linux</key>
           <map>
             <key>md5sum</key>
-            <string>1804b54034ef7f82832506a44acb06b8</string>
+            <string>26fe88213c213dc6153690ab142c25ca</string>
             <key>url</key>
-            <uri>http://s3.amazonaws.com/viewer-source-downloads/install_pkgs/zlib-1.2.3-linux-20090603.tar.bz2</uri>
+            <uri>http://s3.amazonaws.com/viewer-source-downloads/install_pkgs/zlib-1.2.3dfsg-linux-20091208.tar.bz2</uri>
           </map>
           <key>linux64</key>
           <map>