diff --git a/wine.spec b/wine.spec
index be38505..fd330f9 100644
--- a/wine.spec
+++ b/wine.spec
@@ -1,6 +1,8 @@
 %define _use_internal_dependency_generator  1
 
-%define wine_gecko_ver   2.40
+# see https://wiki.winehq.org/Gecko
+%define wine_gecko_ver   2.47
+# see: http://wiki.winehq.org/Mono
 %define wine_mono_ver    4.6.4
 %define wine_staging_ver %{version}
 
@@ -8,7 +10,7 @@
 
 Name:          wine
 Version:       2.0
-Release:       1mamba
+Release:       2mamba
 Epoch:         3
 Summary:       An open source implementation of the Windows API on top of X and Unix
 Group:         Applications/Emulators
@@ -34,10 +36,8 @@ Source15:      wine-oleview.desktop
 Source16:      wine-iexplore.desktop
 Source20:      wine-ldconfig-32
 Source21:      wine-ldconfig-64
-# see: http://wiki.winehq.org/Gecko
 Source30:      http://dl.winehq.org/wine/wine-gecko/%{wine_gecko_ver}/wine_gecko-%{wine_gecko_ver}-x86.msi
 Source31:      http://dl.winehq.org/wine/wine-gecko/%{wine_gecko_ver}/wine_gecko-%{wine_gecko_ver}-x86_64.msi
-# see: http://wiki.winehq.org/Mono
 Source40:      http://dl.winehq.org/wine/wine-mono/%{wine_mono_ver}/wine-mono-%{wine_mono_ver}.msi
 Source42:      wine-autoupdate
 # Staging repository for Wine
@@ -482,6 +482,9 @@ exit 0
 %doc documentation/README.*
 
 %changelog
+* Mon Mar 13 2017 Davide Madrisan <davide.madrisan@gmail.com> 2.0-2mamba
+- update the Mozilla's Gecko Layout Engine to version 2.47
+
 * Sun Mar 12 2017 Davide Madrisan <davide.madrisan@gmail.com> 2.0-1mamba
 - update to 2.0