diff --git a/autobuild.xml b/autobuild.xml
index 8dc1167aeb..6b7f89c4a8 100644
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -2087,16 +2087,28 @@
             <key>name</key>
             <string>darwin</string>
           </map>
+          <key>darwin64</key>
+          <map>
+            <key>archive</key>
+            <map>
+              <key>hash</key>
+              <string>9fb85eff4118913543acde89bcb9a9c1</string>
+              <key>url</key>
+              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/ct2/1512/3413/llceflib-1.6.0.501501-darwin64-501501.tar.bz2</string>
+            </map>
+            <key>name</key>
+            <string>darwin64</string>
+          </map>
           <key>windows</key>
           <map>
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>640cd808de734d9a6ca564475d951980</string>
+              <string>9d19271829a372e028dd3c75605ded9c</string>
               <key>hash_algorithm</key>
               <string>md5</string>
               <key>url</key>
-              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/ct2/1121/2604/llceflib-1.5.3.501109-windows-501109.tar.bz2</string>
+              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/ct2/1518/3437/llceflib-1.6.0.501501-windows-501501.tar.bz2</string>
             </map>
             <key>name</key>
             <string>windows</string>
@@ -2106,16 +2118,16 @@
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>f4b75f37ba344db3efeddfafff10f5f9</string>
+              <string>da1835b11be4442f22fef36820ad46ac</string>
               <key>url</key>
-              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/ct2/1120/2601/llceflib-1.5.3.501109-windows64-501109.tar.bz2</string>
+              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/ct2/1517/3434/llceflib-1.6.0.501501-windows64-501501.tar.bz2</string>
             </map>
             <key>name</key>
             <string>windows64</string>
           </map>
         </map>
         <key>version</key>
-        <string>1.5.3.501109</string>
+        <string>1.6.0.501501</string>
       </map>
       <key>llphysicsextensions_source</key>
       <map>