diff --git a/MozillaFirefox.changes b/MozillaFirefox.changes
index 2ccd42d5..d71e87b9 100644
--- a/MozillaFirefox.changes
+++ b/MozillaFirefox.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Sun Dec 27 09:52:50 UTC 2020 - Wolfgang Rosenauer <wr@rosenauer.org>
+
+- Mozilla Firefox 84.0.1
+  * Fixed problems loading secure websites and crashes for users
+    with certain third-party PKCS11 modules and smartcards installed
+    (bmo#1682881) (fixed in NSS 3.59.1)
+  * Fixed a bug causing some Unity JS games to not load on Apple
+    Silicon devices due to improper detection of the OS version
+    (bmo#1680516)
+- requires NSS 3.59.1
+
 -------------------------------------------------------------------
 Sun Dec 13 18:18:58 UTC 2020 - Wolfgang Rosenauer <wr@rosenauer.org>
 
diff --git a/MozillaFirefox.spec b/MozillaFirefox.spec
index 7512f80d..8f02be1e 100644
--- a/MozillaFirefox.spec
+++ b/MozillaFirefox.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package MozillaFirefox
 #
-# Copyright (c) 2020 SUSE LLC
+# Copyright (c) 2021 SUSE LLC
 #               2006-2020 Wolfgang Rosenauer <wr@rosenauer.org>
 #
 # All modifications and additions to the file contributed by third parties
@@ -30,8 +30,8 @@
 # major 69
 # mainver %major.99
 %define major          84
-%define mainver        %major.0
-%define orig_version   84.0
+%define mainver        %major.0.1
+%define orig_version   84.0.1
 %define orig_suffix    %{nil}
 %define update_channel release
 %define branding       1
@@ -101,7 +101,7 @@ BuildRequires:  libiw-devel
 BuildRequires:  libproxy-devel
 BuildRequires:  makeinfo
 BuildRequires:  mozilla-nspr-devel >= 4.29
-BuildRequires:  mozilla-nss-devel >= 3.59
+BuildRequires:  mozilla-nss-devel >= 3.59.1
 BuildRequires:  nasm >= 2.14
 BuildRequires:  nodejs10 >= 10.22.1
 %if 0%{?sle_version} >= 120000 && 0%{?sle_version} < 150000
diff --git a/firefox-84.0.1.source.tar.xz b/firefox-84.0.1.source.tar.xz
new file mode 100644
index 00000000..51ab7b0f
--- /dev/null
+++ b/firefox-84.0.1.source.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ae5500d270a199f9a10674fbd4ba7a6beac1f260a4c009bbca8ea39967592243
+size 369981420
diff --git a/firefox-84.0.1.source.tar.xz.asc b/firefox-84.0.1.source.tar.xz.asc
new file mode 100644
index 00000000..77f03106
--- /dev/null
+++ b/firefox-84.0.1.source.tar.xz.asc
@@ -0,0 +1,16 @@
+-----BEGIN PGP SIGNATURE-----
+
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+=SwIm
+-----END PGP SIGNATURE-----
diff --git a/firefox-84.0.source.tar.xz b/firefox-84.0.source.tar.xz
deleted file mode 100644
index 9eeb2259..00000000
--- a/firefox-84.0.source.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:23273ef0165b243f5d0908c38e7854d38070282c9b526e8d93b7503cd5f69138
-size 366395172
diff --git a/firefox-84.0.source.tar.xz.asc b/firefox-84.0.source.tar.xz.asc
deleted file mode 100644
index d62b35fa..00000000
--- a/firefox-84.0.source.tar.xz.asc
+++ /dev/null
@@ -1,16 +0,0 @@
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diff --git a/l10n-84.0.tar.xz b/l10n-84.0.1.tar.xz
similarity index 100%
rename from l10n-84.0.tar.xz
rename to l10n-84.0.1.tar.xz
diff --git a/tar_stamps b/tar_stamps
index 7ba94d03..0e8c94ef 100644
--- a/tar_stamps
+++ b/tar_stamps
@@ -1,11 +1,11 @@
 PRODUCT="firefox"
 CHANNEL="release"
-VERSION="84.0"
+VERSION="84.0.1"
 VERSION_SUFFIX=""
-PREV_VERSION="83.0"
+PREV_VERSION="84.0"
 PREV_VERSION_SUFFIX=""
 #SKIP_LOCALES="" # Uncomment to skip l10n and compare-locales-generation
 
 RELEASE_REPO="https://hg.mozilla.org/releases/mozilla-release"
-RELEASE_TAG="98507f230e7442065b287ced065ac77d4d8ea35d"
-RELEASE_TIMESTAMP="20201211215739"
+RELEASE_TAG="88e4de109bfa59db244d1fd590d64edfdd872b54"
+RELEASE_TIMESTAMP="20201221152838"