diff --git a/x11-packages/firefox/build.sh b/x11-packages/firefox/build.sh
index f2a2a40fe1..e1d9a9c3ca 100644
--- a/x11-packages/firefox/build.sh
+++ b/x11-packages/firefox/build.sh
@@ -2,10 +2,9 @@ TERMUX_PKG_HOMEPAGE=https://www.mozilla.org/firefox
 TERMUX_PKG_DESCRIPTION="Mozilla Firefox web browser"
 TERMUX_PKG_LICENSE="MPL-2.0"
 TERMUX_PKG_MAINTAINER="@termux"
-TERMUX_PKG_VERSION="120.0.1"
-TERMUX_PKG_REVISION=1
+TERMUX_PKG_VERSION="121.0"
 TERMUX_PKG_SRCURL=https://ftp.mozilla.org/pub/firefox/releases/${TERMUX_PKG_VERSION}/source/firefox-${TERMUX_PKG_VERSION}.source.tar.xz
-TERMUX_PKG_SHA256=76e7bb2a144880158444d8e9014f4d080d219bd150c3db405b27e4c7e3959ae2
+TERMUX_PKG_SHA256=edc7a5159d23ff2a23e22bf5abe22231658cee2902b93b5889ee73958aa06aa4
 # ffmpeg and pulseaudio are dependencies through dlopen(3):
 TERMUX_PKG_DEPENDS="ffmpeg, fontconfig, freetype, gdk-pixbuf, glib, gtk3, libandroid-shmem, libc++, libcairo, libevent, libffi, libice, libicu, libjpeg-turbo, libnspr, libnss, libpixman, libsm, libvpx, libwebp, libx11, libxcb, libxcomposite, libxdamage, libxext, libxfixes, libxrandr, libxtst, pango, pulseaudio, zlib"
 TERMUX_PKG_BUILD_DEPENDS="libcpufeatures, libice, libsm"
@@ -47,7 +46,7 @@ termux_pkg_auto_update() {
 termux_step_post_get_source() {
 	local f="media/ffvpx/config_unix_aarch64.h"
 	echo "Applying sed substitution to ${f}"
-	sed -i -E '/^#define (CONFIG_LINUX_PERF|HAVE_SYSCTL) /s/1$/0/' ${f}
+	sed -E '/^#define (CONFIG_LINUX_PERF|HAVE_SYSCTL) /s/1$/0/' -i ${f}
 }
 
 termux_step_pre_configure() {
@@ -64,7 +63,9 @@ termux_step_pre_configure() {
 
 	cargo install cbindgen
 
-	sed -i -e "s|%TERMUX_CARGO_TARGET_NAME%|$CARGO_TARGET_NAME|" $TERMUX_PKG_SRCDIR/build/moz.configure/rust.configure
+	sed \
+		-e "s|@CARGO_TARGET_NAME@|${CARGO_TARGET_NAME}|" \
+		-i "${TERMUX_PKG_SRCDIR}"/build/moz.configure/rust.configure
 
 	export HOST_CC=$(command -v clang)
 	export HOST_CXX=$(command -v clang++)
@@ -75,41 +76,41 @@ termux_step_pre_configure() {
 }
 
 termux_step_configure() {
-	python3 $TERMUX_PKG_SRCDIR/configure.py \
-		--target=$TERMUX_HOST_PLATFORM \
-		--prefix=$TERMUX_PREFIX \
-		--with-sysroot=$TERMUX_PREFIX \
+	python3 "${TERMUX_PKG_SRCDIR}"/configure.py \
+		--target=${TERMUX_HOST_PLATFORM} \
+		--prefix=${TERMUX_PREFIX} \
+		--with-sysroot=${TERMUX_PREFIX} \
+		--allow-addon-sideload \
+		--disable-accessibility \
+		--disable-address-sanitizer-reporter \
+		--disable-crashreporter \
+		--disable-dbus \
+		--disable-elf-hack \
+		--disable-hardening \
+		--disable-jemalloc \
+		--disable-necko-wifi \
+		--disable-parental-controls \
+		--disable-synth-speechd \
+		--disable-webspeech \
+		--disable-sandbox \
+		--disable-tests \
+		--disable-updater \
 		--enable-audio-backends=pulseaudio \
 		--enable-minify=properties \
 		--enable-mobile-optimize \
 		--enable-printing \
-		--disable-jemalloc \
 		--enable-system-ffi \
 		--enable-system-pixman \
+		--with-branding=browser/branding/official \
 		--with-system-icu \
-		--with-system-jpeg=$TERMUX_PREFIX \
+		--with-system-jpeg=${TERMUX_PREFIX} \
 		--with-system-libevent \
 		--with-system-libvpx \
 		--with-system-nspr \
 		--with-system-nss \
 		--with-system-webp \
 		--with-system-zlib \
-		--without-wasm-sandboxed-libraries \
-		--with-branding=browser/branding/official \
-		--disable-sandbox \
-		--disable-tests \
-		--disable-accessibility \
-		--disable-crashreporter \
-		--disable-dbus \
-		--disable-necko-wifi \
-		--disable-updater \
-		--disable-hardening \
-		--disable-parental-controls \
-		--disable-webspeech \
-		--disable-synth-speechd \
-		--disable-elf-hack \
-		--disable-address-sanitizer-reporter \
-		--allow-addon-sideload
+		--without-wasm-sandboxed-libraries
 }
 
 termux_step_post_make_install() {
diff --git a/x11-packages/firefox/firefox.patch b/x11-packages/firefox/firefox.patch
index 57449a1646..d7549565bc 100644
--- a/x11-packages/firefox/firefox.patch
+++ b/x11-packages/firefox/firefox.patch
@@ -67,11 +67,11 @@
  #define PREF_AUDIOIPC_STACK_SIZE "media.audioipc.stack_size"
  #define PREF_AUDIOIPC_SHM_AREA_SIZE "media.audioipc.shm_area_size"
  
--#if (defined(XP_LINUX) && !defined(MOZ_WIDGET_ANDROID)) || \
-+#if (defined(XP_LINUX) && !defined(__TERMUX__)) || \
-     defined(XP_MACOSX) || defined(XP_WIN)
+-#if defined(XP_LINUX) || defined(XP_MACOSX) || defined(XP_WIN)
++#if (defined(XP_LINUX) && !defined(__TERMUX__)) || defined(XP_MACOSX) || defined(XP_WIN)
  #  define MOZ_CUBEB_REMOTING
  #endif
+ 
 --- a/dom/media/moz.build
 +++ b/dom/media/moz.build
 @@ -321,7 +321,7 @@
diff --git a/x11-packages/firefox/rust.configure.patch b/x11-packages/firefox/rust.configure.patch
index a9151c8129..48175419cc 100644
--- a/x11-packages/firefox/rust.configure.patch
+++ b/x11-packages/firefox/rust.configure.patch
@@ -5,7 +5,7 @@
  
      if rustc_target is None:
 -        die("Don't know how to translate {} for rustc".format(host_or_target.alias))
-+        rustc_target = "%TERMUX_CARGO_TARGET_NAME%"
++        rustc_target = "@CARGO_TARGET_NAME@"
  
      return rustc_target