diff --git a/autobuild.xml b/autobuild.xml
index 4c52a6199b..9547191046 100644
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -833,26 +833,14 @@
             <key>name</key>
             <string>darwin64</string>
           </map>
-          <key>linux</key>
-          <map>
-            <key>archive</key>
-            <map>
-              <key>hash</key>
-              <string>bd0f62a03d846332adf07997e307cde6</string>
-              <key>url</key>
-              <string>http://downloads.phoenixviewer.com/dullahan-1.1.1080_3.3325.1750.gaabe4c4-linux-180871715.tar.bz2</string>
-            </map>
-            <key>name</key>
-            <string>linux</string>
-          </map>
           <key>linux64</key>
           <map>
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>48d316c0ceb898f7577015df75b6d303</string>
+              <string>9efa40655f23bc9875e96d04a63f37bf</string>
               <key>url</key>
-              <string>http://downloads.phoenixviewer.com/dullahan-1.1.1320_3.3626.1895.g7001d56-linux64-191221910.tar.bz2</string>
+              <string>http://downloads.phoenixviewer.com/dullahan-1.6.4.202005061828_81.3.1_gb2b49f1_chromium-81.0.4044.113-linux64-201281557.tar.bz2</string>
             </map>
             <key>name</key>
             <string>linux64</string>
diff --git a/indra/media_plugins/cef/media_plugin_cef.cpp b/indra/media_plugins/cef/media_plugin_cef.cpp
index f75d57bf91..3738341bae 100644
--- a/indra/media_plugins/cef/media_plugin_cef.cpp
+++ b/indra/media_plugins/cef/media_plugin_cef.cpp
@@ -41,6 +41,7 @@
 #include <chrono>
 
 #include "dullahan.h"
+#include "dullahan_version.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 //
@@ -509,7 +510,9 @@ void MediaPluginCEF::receiveMessage(const char* message_string)
 				settings.background_color = 0xffffffff;
 				settings.cache_enabled = true;
 				settings.cache_path = mCachePath;
+#if (DULLAHAN_VERSION_MAJOR*100+DULLAHAN_VERSION_MINOR) < 106
 				settings.cookie_store_path = mCookiePath;
+#endif
 				settings.cookies_enabled = mCookiesEnabled;
 				settings.disable_gpu = mDisableGPU;
 				settings.flash_enabled = mPluginsEnabled;
@@ -664,8 +667,10 @@ void MediaPluginCEF::receiveMessage(const char* message_string)
 			else if (message_name == "scroll_event")
 			{
 				// Mouse coordinates for cef to be able to scroll 'containers'
-				//S32 x = message_in.getValueS32("x");
-				//S32 y = message_in.getValueS32("y");
+#if (DULLAHAN_VERSION_MAJOR*100+DULLAHAN_VERSION_MINOR) >= 106
+				S32 x = message_in.getValueS32("x");
+				S32 y = message_in.getValueS32("y");
+#endif
 				// Wheel's clicks
 				S32 delta_x = message_in.getValueS32("clicks_x");
 				S32 delta_y = message_in.getValueS32("clicks_y");
@@ -673,8 +678,11 @@ void MediaPluginCEF::receiveMessage(const char* message_string)
 				delta_x *= -scaling_factor;
 				delta_y *= -scaling_factor;
 
-				// mCEFLib->mouseWheel(x, y, delta_x, delta_y);
+#if (DULLAHAN_VERSION_MAJOR*100+DULLAHAN_VERSION_MINOR) >= 106
+				mCEFLib->mouseWheel(x, y, delta_x, delta_y);
+#else
 				mCEFLib->mouseWheel(delta_x, delta_y);
+#endif
 			}
 			else if (message_name == "text_event")
 			{
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 10e6207056..29035a7adc 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -144,6 +144,7 @@
 #include "llexception.h"
 //#if !LL_LINUX
 #include "cef/dullahan.h"
+#include "cef/dullahan_version.h"
 #include "vlc/libvlc_version.h"
 //#endif // LL_LINUX
 
diff --git a/indra/newview/viewer_manifest.py b/indra/newview/viewer_manifest.py
index b3e07abc07..6646237766 100755
--- a/indra/newview/viewer_manifest.py
+++ b/indra/newview/viewer_manifest.py
@@ -1892,7 +1892,11 @@ class LinuxManifest(ViewerManifest):
         with self.prefix(src=os.path.join(pkgdir, 'bin', 'release'), dst="bin"):
             self.path( "chrome-sandbox" )
             self.path( "dullahan_host" )
-            self.path( "natives_blob.bin" )
+            self.fs_try_path( "natives_blob.bin" )
+            self.path( "snapshot_blob.bin" )
+            self.path( "v8_context_snapshot.bin" )
+        with self.prefix(src=os.path.join(pkgdir, 'bin', 'release'), dst="lib"):
+            self.fs_try_path( "natives_blob.bin" )
             self.path( "snapshot_blob.bin" )
             self.path( "v8_context_snapshot.bin" )
 
@@ -1903,6 +1907,13 @@ class LinuxManifest(ViewerManifest):
             self.path( "cef_200_percent.pak" )
             self.path( "devtools_resources.pak" )
             self.path( "icudtl.dat" )
+        with self.prefix(src=os.path.join(pkgdir, 'resources'), dst="lib"):
+            self.path( "cef.pak" )
+            self.path( "cef_extensions.pak" )
+            self.path( "cef_100_percent.pak" )
+            self.path( "cef_200_percent.pak" )
+            self.path( "devtools_resources.pak" )
+            self.path( "icudtl.dat" )
 
         with self.prefix(src=os.path.join(pkgdir, 'resources', 'locales'), dst=os.path.join('bin', 'locales')):
             self.path("am.pak")