diff --git a/.firefox.metadata b/.firefox.metadata
index 96b97d2..19f80b6 100644
--- a/.firefox.metadata
+++ b/.firefox.metadata
@@ -1,5 +1,5 @@
c822547dbc12e2baebdfdfb38b665e23f0c2513a SOURCES/cbindgen-vendor.tar.xz
-736b0b4313f678de624c0124f61a86893385d110 SOURCES/firefox-91.3.0esr.processed-source.tar.xz
-7b821f5b94cba12efc8a2b86dbd8c7321b453568 SOURCES/firefox-langpacks-91.3.0esr-20211101.tar.xz
+322e0ffb8b442f599b0f5dd695e6f83050b3dc82 SOURCES/firefox-91.4.0esr.processed-source.tar.xz
+74a1b8c9a5f4a96f80af2d3fe542495e3af2423a SOURCES/firefox-langpacks-91.4.0esr-20211201.tar.xz
b5fd1332d8e0d37339ae170c7bebcb63a40b22e0 SOURCES/nspr-4.32.0-1.el8_1.src.rpm
-29da2158892dc108a7a21fd8411fccf0061481b3 SOURCES/nss-3.67.0-6.el8_1.src.rpm
+8fff814901e03c2518ede2f8992d898f5ba61ed9 SOURCES/nss-3.67.0-7.el8_1.src.rpm
diff --git a/.gitignore b/.gitignore
index 1a94cd1..e79811e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
SOURCES/cbindgen-vendor.tar.xz
-SOURCES/firefox-91.3.0esr.processed-source.tar.xz
-SOURCES/firefox-langpacks-91.3.0esr-20211101.tar.xz
+SOURCES/firefox-91.4.0esr.processed-source.tar.xz
+SOURCES/firefox-langpacks-91.4.0esr-20211201.tar.xz
SOURCES/nspr-4.32.0-1.el8_1.src.rpm
-SOURCES/nss-3.67.0-6.el8_1.src.rpm
+SOURCES/nss-3.67.0-7.el8_1.src.rpm
diff --git a/README.debrand b/README.debrand
deleted file mode 100644
index 01c46d2..0000000
--- a/README.debrand
+++ /dev/null
@@ -1,2 +0,0 @@
-Warning: This package was configured for automatic debranding, but the changes
-failed to apply.
diff --git a/SPECS/firefox.spec b/SPECS/firefox.spec
index 67fcf10..1087840 100644
--- a/SPECS/firefox.spec
+++ b/SPECS/firefox.spec
@@ -128,7 +128,7 @@ end}
Summary: Mozilla Firefox Web browser
Name: firefox
-Version: 91.3.0
+Version: 91.4.0
Release: 1%{?dist}
URL: https://www.mozilla.org/firefox/
License: MPLv1.1 or GPLv2+ or LGPLv2+
@@ -149,7 +149,7 @@ ExcludeArch: s390 ppc
# Link to official tarball: https://hg.mozilla.org/releases/mozilla-release/archive/firefox-%%{version}%%{?pre_version}.source.tar.xz
Source0: firefox-%{version}%{?pre_version}.processed-source.tar.xz
%if %{build_langpacks}
-Source1: firefox-langpacks-%{version}%{?pre_version}-20211101.tar.xz
+Source1: firefox-langpacks-%{version}%{?pre_version}-20211201.tar.xz
%endif
Source2: cbindgen-vendor.tar.xz
Source3: process-official-tarball
@@ -168,7 +168,7 @@ Source26: distribution.ini
Source27: google-api-key
Source28: node-stdout-nonblocking-wrapper
-Source403: nss-3.67.0-6.el8_1.src.rpm
+Source403: nss-3.67.0-7.el8_1.src.rpm
Source401: nss-setup-flags-env.inc
Source402: nspr-4.32.0-1.el8_1.src.rpm
@@ -1247,6 +1247,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
#---------------------------------------------------------------------
%changelog
+* Wed Dec 01 2021 Eike Rathke <erack@redhat.com> - 91.4.0-1
+- Update to 91.4.0 build1
+
* Mon Nov 01 2021 Eike Rathke <erack@redhat.com> - 91.3.0-1
- Update to 91.3.0 build1