diff --git a/network/web/firefox/actions.py b/network/web/firefox/actions.py
index 8632078282..fc780f0f57 100644
--- a/network/web/firefox/actions.py
+++ b/network/web/firefox/actions.py
@@ -9,7 +9,7 @@ from pisi.actionsapi import pisitools
 from pisi.actionsapi import shelltools
 from pisi.actionsapi import get
 
-WorkDir = "mozilla-release"
+#WorkDir = "mozilla-release"
 ObjDir = "build"
 locales = "az be  bs ca  da  de  el  en-US en-GB en-ZA  es-AR  es-CL  es-ES  fi  fr  hr  hu  it  lt nl  pl  pt-BR  pt-PT  ro  ru  sr  sv-SE  tr  uk".split()
 xpidir = "%s/xpi" % get.workDIR()
diff --git a/network/web/firefox/files/firefox-install-dir.patch b/network/web/firefox/files/firefox-install-dir.patch
index 4cf976b1a3..8ee5d26f0d 100644
--- a/network/web/firefox/files/firefox-install-dir.patch
+++ b/network/web/firefox/files/firefox-install-dir.patch
@@ -1,6 +1,6 @@
-diff -up firefox-29.0/mozilla-release/config/baseconfig.mk.orig firefox-29.0/mozilla-release/config/baseconfig.mk
---- mozilla-release/config/baseconfig.mk.orig	2014-04-22 15:38:52.948165295 +0200
-+++ mozilla-release/config/baseconfig.mk	2014-04-22 15:42:20.387481673 +0200
+diff -Nuar firefox-42.0.OSmanOS/config/baseconfig.mk firefox-42.0/config/baseconfig.mk
+--- firefox-42.0.OSmanOS/config/baseconfig.mk	2015-10-30 00:17:52.000000000 +0200
++++ firefox-42.0/config/baseconfig.mk	2015-11-06 23:44:25.232724913 +0200
 @@ -4,7 +4,7 @@
  # whether a normal build is happening or whether the check is running.
  includedir := $(includedir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
@@ -10,4 +10,3 @@ diff -up firefox-29.0/mozilla-release/config/baseconfig.mk.orig firefox-29.0/moz
  sdkdir = $(libdir)/$(MOZ_APP_NAME)-devel-$(MOZ_APP_VERSION)
  ifndef TOP_DIST
  TOP_DIST = dist
-
diff --git a/network/web/firefox/files/mozconfig b/network/web/firefox/files/mozconfig
index 70b4a74f49..840c32cc9a 100644
--- a/network/web/firefox/files/mozconfig
+++ b/network/web/firefox/files/mozconfig
@@ -13,8 +13,9 @@ ac_add_options --with-system-png
 #ac_add_options --with-system-libvpx #
 #ac_add_options --with-system-icu
 ac_add_options --enable-system-hunspell
-ac_add_options --enable-system-sqlite
+ac_add_options --disable-system-sqlite
 ac_add_options --enable-system-ffi
+ac_add_options --disable-gconf
 #ac_add_options --enable-system-cairo
 ac_add_options --enable-system-pixman
 # The BLFS editors recommend not changing anything below this line:
diff --git a/network/web/firefox/pspec.xml b/network/web/firefox/pspec.xml
index 939dd85326..62e32a36a5 100644
--- a/network/web/firefox/pspec.xml
+++ b/network/web/firefox/pspec.xml
@@ -15,7 +15,7 @@
         <IsA>app:gui</IsA>
         <Summary>Firefox Web Browser</Summary>
         <Description>It is more secure and faster to browse the web with Firefox web browser. You can personalize your web browser with many specifications that is not enough to explain in two sentences.</Description>
-        <Archive sha1sum="6ddda46bd6540ab3ae932fbb5ffec8e9a85cab13" type="tarbz2">https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/40.0.3/source/firefox-40.0.3.source.tar.bz2</Archive>
+        <Archive sha1sum="c207a73fbfde2683aca36417331441d007ceb765" type="tarxz">https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/42.0/source/firefox-42.0.source.tar.xz</Archive>
         <AdditionalFiles>
             <!--Our main configure script. Configure paramters are stored here.-->
             <AdditionalFile target=".mozconfig" permission="0644">mozconfig</AdditionalFile>
@@ -24,15 +24,12 @@
         <BuildDependencies>
             <Dependency>wget</Dependency>
             <Dependency>yasm</Dependency>
-            <Dependency>nss-devel</Dependency>
-            <Dependency>nspr-devel</Dependency>
             <Dependency>zlib-devel</Dependency>
             <Dependency>gtk2-devel</Dependency>
             <Dependency>libXt-devel</Dependency>
             <Dependency>libSM-devel</Dependency>
             <Dependency>libpng-devel</Dependency>
             <Dependency>libffi-devel</Dependency>
-            <Dependency>sqlite-devel</Dependency>
             <Dependency>gnutls-devel</Dependency>
             <Dependency>hunspell-devel</Dependency>
             <Dependency>alsa-lib-devel</Dependency>
@@ -42,9 +39,10 @@
             <Dependency>libjpeg-turbo-devel</Dependency>
             <Dependency>pulseaudio-libs-devel</Dependency>
             <Dependency>gst-plugins-base-next-devel</Dependency>
+            <Dependency versionFrom="3.19.4">nss-devel</Dependency>
+            <Dependency versionFrom="4.10.10">nspr-devel</Dependency>
         </BuildDependencies>
         <Patches>
-            <Patch level="1">rhbz-966424.patch</Patch>
             <Patch level="1">firefox-install-dir.patch</Patch>
         </Patches>
     </Source>
@@ -519,6 +517,13 @@
     </Package>
 
     <History>
+        <Update release="40">
+            <Date>2015-11-08</Date>
+            <Version>42.0</Version>
+            <Comment>Version bump, http://www.mozilla.org/en-US/firefox/42.0/releasenotes</Comment>
+            <Name>Osman Erkan</Name>
+            <Email>osman.erkan@pisilinux.org</Email>
+        </Update>
         <Update release="39">
             <Date>2015-09-01</Date>
             <Version>40.0.3</Version>