diff --git a/srcpkgs/firefox/template b/srcpkgs/firefox/template
index ba2efe0050b..3883c0a299b 100644
--- a/srcpkgs/firefox/template
+++ b/srcpkgs/firefox/template
@@ -1,13 +1,13 @@
 # Template build file for 'firefox'.
 pkgname=firefox
-version=49.0.2
+version=50.0
 revision=1
-short_desc="Lightweight gecko-based web browser"
+short_desc="Mozilla Firefox web browser"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="https://www.mozilla.org/firefox/"
-license="MPL-1.1, GPL-2, LGPL-2.1"
+license="MPL-2.0, GPL-2, LGPL-2.1"
 distfiles="${MOZILLA_SITE}/${pkgname}/releases/${version}/source/${pkgname}-${version}.source.tar.xz"
-checksum=67abe9202958c36bf60454c91065953aa8f6ede83ea1c0e9cdb870c3fc3d56d0
+checksum=5da027350aee148dc62cc1ca897db30510be87ca8eab5e67a7adc7a2479b8616
 
 only_for_archs="i686 i686-musl x86_64 x86_64-musl"
 nopie=yes
@@ -26,7 +26,7 @@ makedepends="
  startup-notification-devel dbus-glib-devel alsa-lib-devel
  hunspell-devel libXcomposite-devel libSM-devel libXScrnSaver-devel
  libXt-devel libXdamage-devel $(vopt_if gtk3 gtk+3-devel)"
-depends="nss>=3.21 desktop-file-utils hicolor-icon-theme"
+depends="nss>=3.27 desktop-file-utils hicolor-icon-theme"
 conflicts="firefox-esr>=0"
 
 build_options_default="gtk3"
@@ -50,8 +50,7 @@ pre_configure() {
 	*-musl)
 		$XBPS_FETCH_CMD http://git.alpinelinux.org/cgit/aports/plain/community/firefox-esr/stab.h
 		mv stab.h toolkit/crashreporter/google-breakpad/src/
-		sed -i "s/\(rust_target=x86_64-unknown-linux\)-gnu/\1-musl/" old-configure \
-			build/autoconf/rust.m4
+		sed -i "s/\(x86_64-unknown-linux\)-gnu/\1-musl/" build/moz.configure/rust.configure
 		;;
 	esac