diff --git a/extra/firefox/build b/extra/firefox/build
index 3b25bfac..3e279a7b 100755
--- a/extra/firefox/build
+++ b/extra/firefox/build
@@ -13,23 +13,19 @@ export PATH="$PWD/autoconf/bin:$PATH"
 # Fix linker errors at runtime.
 export LDFLAGS="$LDFLAGS -Wl,-rpath=/usr/lib/firefox"
 
-# Ensure that MOZ_TELEMETRY_REPORTING is unset.
-unset MOZ_TELEMETRY_REPORTING
+unset  MOZ_TELEMETRY_REPORTING
+export MOZ_NOSPAM=1
 
 cd firefox
 
-mv mozconfig .mozconfig
-
 # Fix OOM errors.
 cores=$(nproc)
-printf '%s\n' "mk_add_options MOZ_MAKE_FLAGS=\"-j$cores -l$cores\"" >> .mozconfig
+printf '%s\n' "mk_add_options MOZ_MAKE_FLAGS=\"-j$cores -l$cores\"" >> mozconfig
 
 for patch in *.patch; do
     patch -p1 < "$patch"
 done
 
-rm -f old-configure
-
 ./mach build
 DESTDIR="$1" ./mach install
 
diff --git a/extra/firefox/checksums b/extra/firefox/checksums
index d03df8a3..3be93350 100644
--- a/extra/firefox/checksums
+++ b/extra/firefox/checksums
@@ -1,7 +1,7 @@
-9b3e6d8f99819f9eda9ebba403b644a2b96d19450b42cae422bbf4386902a840  firefox-68.0.2.source.tar.xz
+f56f5fa5a4744be0b9acf259cb991254d708a50b9a0a12d1d846ffa5a6c409ac  firefox-68.1.0esr.source.tar.xz
 f0611136bee505811e9ca11ca7ac188ef5323a8e2ef19cffd3edb3cf08fd791e  autoconf-2.13.tar.gz
 8355ff012e7380f9eec70f8e2c02d256f097943438c9cfba968cd06401c443df  user.js
-7e9f230955b37f9b9dccaa352d7fde63ce081095847b190f200f601727ee113a  mozconfig
+143c5f3348713eaa0850c9ba5b0233603a85764feda9fa5b267f9f4424d03f4c  mozconfig
 960d82bbfdc88c95f5cb4f2e1c1bf23dae7519b3b7203914d7b3ddbff1ba4c28  stab.h
 315880530f09175788dfa48a1915bfa1e190bfd3e267988b9100cb93006c808c  fix-fortify-system-wrappers.patch
 026e778105ed4921d61b6f9935a861b7e9ba9ac8cc44d8516883c3b5bd7590c4  fix-musl.patch
@@ -10,3 +10,4 @@ f0611136bee505811e9ca11ca7ac188ef5323a8e2ef19cffd3edb3cf08fd791e  autoconf-2.13.
 b19aaae7fc45db643f8d2540d96919c745ea341e36d9aea2df40e3e90eb951f0  fix-toolkit.patch
 e24f71a6a0d8d4637b2081780c66b01be4eeb4dd496031270d0ae0b898be94d2  fix-tools.patch
 5e0fcfde375837074baad21a8ab26aa442a7940617ebd074a6b238a48f2ceb63  fix-webrtc-glibcisms.patch
+1d4a8f110d34da478f5597727eda9acacebd443dd86cce5bb64f898c01feabce  mallinfo.patch
diff --git a/extra/firefox/depends b/extra/firefox/depends
index 9c386ef8..35a0b17f 100644
--- a/extra/firefox/depends
+++ b/extra/firefox/depends
@@ -1,4 +1,5 @@
 alsa-lib
+bzip2
 cbindgen      make
 clang         make
 ffmpeg
@@ -11,11 +12,15 @@ libXcomposite
 libXcursor
 libXrender
 libXt
+libjpeg-turbo
+libffi
+libpng
 libvpx
 llvm          make
 nasm          make
 nodejs        make
 perl          make
+pixman
 python        make
 python2       make
 rust          make
diff --git a/extra/firefox/files/mozconfig b/extra/firefox/files/mozconfig
index c1975193..3bf11ef8 100644
--- a/extra/firefox/files/mozconfig
+++ b/extra/firefox/files/mozconfig
@@ -1,31 +1,38 @@
 ac_add_options --prefix=/usr
 ac_add_options --libdir=/usr/lib
 
+ac_add_options --enable-official-branding
+ac_add_options --enable-optimize="$CFLAGS"
+ac_add_options --enable-install-strip
+ac_add_options --enable-strip
+
 ac_add_options --without-system-nspr
 ac_add_options --without-system-nss
-ac_add_options --without-system-jpeg
-ac_add_options --without-system-zlib
-ac_add_options --without-system-bz2
+ac_add_options --with-system-jpeg
+ac_add_options --with-system-zlib
+ac_add_options --with-system-bz2
+ac_add_options --with-system-png
+
+# System 'libvpx' is too new.
 ac_add_options --without-system-libvpx
-ac_add_options --without-system-png
-ac_add_options --without-system-pixman
-ac_add_options --without-system-ffi
+
+ac_add_options --with-system-pixman
+ac_add_options --with-system-ffi
 
 ac_add_options --disable-gconf
-ac_add_options --disable-install-strip
-ac_add_options --disable-strip
 ac_add_options --disable-profiling
 ac_add_options --disable-accessibility
-ac_add_options --enable-optimize="$CFLAGS"
-
-ac_add_options --enable-application=browser
+ac_add_options --disable-tests
 ac_add_options --disable-system-extension-dirs
-ac_add_options --enable-extensions=default,-skipgnomevfs,-skipgio
 ac_add_options --disable-parental-controls
+ac_add_options --disable-debug-symbols
+ac_add_options --disable-callgrind
+ac_add_options --disable-vtune
 
 # musl
-ac_add_options --disable-jemalloc
+ac_add_options --disable-elf-hack
 ac_add_options --disable-gold
+ac_add_options --disable-jemalloc
 ac_add_options --enable-release
 
 # ALSA/PulseAudio (removed in 70)
@@ -34,7 +41,7 @@ ac_add_options --enable-alsa
 
 ac_add_options --disable-startup-notification
 
-# Respect the user's privacy.
+# Respect the user.
 export MOZ_SERVICES_METRICS=0
 export MOZ_PAY=0
 export MOZ_SERVICES_HEALTHREPORTER=0
@@ -42,10 +49,10 @@ export MOZ_SERVICES_FXACCOUNTS=0
 export MOZ_SERVICES_METRICS=0
 export MOZ_DATA_REPORTING=0
 export MOZ_DEVICES=0
+export MOZ_REQUIRE_SIGNING=0
 ac_add_options --disable-crashreporter
 ac_add_options --disable-updater
 ac_add_options --disable-dbus
 ac_add_options --disable-eme
 ac_add_options --disable-necko-wifi
 ac_add_options --disable-webrtc
-ac_add_options --disable-tests
diff --git a/extra/firefox/patches/mallinfo.patch b/extra/firefox/patches/mallinfo.patch
new file mode 100644
index 00000000..0649413c
--- /dev/null
+++ b/extra/firefox/patches/mallinfo.patch
@@ -0,0 +1,34 @@
+--- a/xpcom/base/nsMemoryReporterManager.cpp.orig	2019-03-19 17:12:20.844810044 +0100
++++ b/xpcom/base/nsMemoryReporterManager.cpp	2019-03-19 17:13:32.505133615 +0100
+@@ -123,6 +123,7 @@
+   return GetProcSelfSmapsPrivate(aN);
+ }
+
++#ifdef __GLIBC__
+ #  ifdef HAVE_MALLINFO
+ #    define HAVE_SYSTEM_HEAP_REPORTER 1
+ static MOZ_MUST_USE nsresult SystemHeapSize(int64_t* aSizeOut) {
+@@ -142,6 +143,7 @@
+   return NS_OK;
+ }
+ #  endif
++#endif // __GLIBC__
+
+ #elif defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || \
+     defined(__OpenBSD__) || defined(__FreeBSD_kernel__)
+@@ -642,6 +644,7 @@
+   return NS_OK;
+ }
+
++#ifdef __GLIBC__
+ #  define HAVE_SYSTEM_HEAP_REPORTER 1
+ // Windows can have multiple separate heaps. During testing there were multiple
+ // heaps present but the non-default ones had sizes no more than a few 10s of
+@@ -698,6 +701,7 @@
+   *aSizeOut = heapsSize;
+   return NS_OK;
+ }
++#endif // __GLIBC__
+
+ struct SegmentKind {
+   DWORD mState;
diff --git a/extra/firefox/sources b/extra/firefox/sources
index 239ea928..d42de755 100644
--- a/extra/firefox/sources
+++ b/extra/firefox/sources
@@ -1,4 +1,4 @@
-https://archive.mozilla.org/pub/firefox/releases/68.0.2/source/firefox-68.0.2.source.tar.xz firefox/
+https://archive.mozilla.org/pub/firefox/releases/68.1.0esr/source/firefox-68.1.0esr.source.tar.xz firefox/
 https://ftp.gnu.org/gnu/autoconf/autoconf-2.13.tar.gz autoconf2.13/
 https://raw.githubusercontent.com/ghacksuserjs/ghacks-user.js/6618bf5f7693a15c77f863b6c5d9dabd5f72972a/user.js firefox/
 files/mozconfig firefox/
@@ -10,3 +10,4 @@ patches/fix-seccomp-bpf.patch firefox/
 patches/fix-toolkit.patch firefox/
 patches/fix-tools.patch firefox/
 patches/fix-webrtc-glibcisms.patch firefox/
+patches/mallinfo.patch firefox/
diff --git a/extra/firefox/version b/extra/firefox/version
index f5c1b46b..1fcb6796 100644
--- a/extra/firefox/version
+++ b/extra/firefox/version
@@ -1 +1 @@
-68.0.2 4
+68.1.0esr 1