diff --git a/packages/firefox.xml b/packages/firefox.xml
index 660dfa5..aaf6e4b 100644
--- a/packages/firefox.xml
+++ b/packages/firefox.xml
@@ -2,11 +2,11 @@
 <packages>
     <package id="firefox"
              name="Mozilla Firefox"
-             revision="36"
+             revision="37"
              reboot="false"
              priority="10">
 
-        <variable name="PKG_VERSION" value="31.7.0" />
+        <variable name="PKG_VERSION" value="31.8.0" />
         <variable name="VARIANTE" value="esr" />
         <variable architecture="x86" name="INSTALL_PATH" value="%PROGRAMFILES%\Mozilla Firefox" />
         <variable architecture="x64" name="INSTALL_PATH" value="%PROGRAMFILES(x86)%\Mozilla Firefox" />
diff --git a/softwares/Firefox Setup 31.7.0esr.exe b/softwares/Firefox Setup 31.8.0esr.exe
similarity index 74%
rename from softwares/Firefox Setup 31.7.0esr.exe
rename to softwares/Firefox Setup 31.8.0esr.exe
index 42a61ba..6461cdb 100644
Binary files a/softwares/Firefox Setup 31.7.0esr.exe and b/softwares/Firefox Setup 31.8.0esr.exe differ