diff --git a/autobuild.xml b/autobuild.xml
index 1a353fe2e9..f363b76706 100644
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -1418,9 +1418,9 @@
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>c1c9e32e21f3c34d91ed045b2ca91f24</string>
+              <string>7a0059748d0b8733f2f9ce434cf604b8</string>
               <key>url</key>
-              <string>https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/87781/805801/libpng-1.6.8.563850-darwin64-563850.tar.bz2</string>
+              <string>https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/107514/937867/libpng-1.6.38.576621-darwin64-576621.tar.bz2</string>
             </map>
             <key>name</key>
             <string>darwin64</string>
@@ -1442,9 +1442,9 @@
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>642e9cf95c8ccd0eb34f6d7a40df585a</string>
+              <string>3112013186ad60b0fc270a398d4dd499</string>
               <key>url</key>
-              <string>https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/87782/805831/libpng-1.6.8.563850-windows-563850.tar.bz2</string>
+              <string>https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/107513/937823/libpng-1.6.38.576621-windows-576621.tar.bz2</string>
             </map>
             <key>name</key>
             <string>windows</string>
@@ -1454,16 +1454,16 @@
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>ce46aa0f171d97626c4a3940347cecd7</string>
+              <string>7c6bfcdb0d6162587cdbc436f595dd02</string>
               <key>url</key>
-              <string>https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/87780/805832/libpng-1.6.8.563850-windows64-563850.tar.bz2</string>
+              <string>https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/107512/937822/libpng-1.6.38.576621-windows64-576621.tar.bz2</string>
             </map>
             <key>name</key>
             <string>windows64</string>
           </map>
         </map>
         <key>version</key>
-        <string>1.6.8.563850</string>
+        <string>1.6.38.576621</string>
       </map>
       <key>libuuid</key>
       <map>