diff --git a/.gitignore b/.gitignore
index b8062ca..f7c892c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -376,3 +376,4 @@ firefox-3.6.4.source.tar.bz2
 /firefox-langpacks-71.0-20191202.tar.xz
 /firefox-72.0.source.tar.xz
 /firefox-langpacks-72.0-20200103.tar.xz
+/firefox-langpacks-72.0-20200106.tar.xz
diff --git a/firefox.spec b/firefox.spec
index e33e429..75cb865 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -102,12 +102,12 @@ ExcludeArch: s390x
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
 Version:        72.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Source0:        https://archive.mozilla.org/pub/firefox/releases/%{version}%{?pre_version}/source/firefox-%{version}%{?pre_version}.source.tar.xz
 %if %{with langpacks}
-Source1:        firefox-langpacks-%{version}%{?pre_version}-20200103.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20200106.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source10:       firefox-mozconfig
@@ -932,6 +932,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Mon Jan 06 2020 Jan Horak <jhorak@redhat.com> - 72.0-2
+- Update to 72.0 build4
+
 * Fri Jan 03 2020 Jan Horak <jhorak@redhat.com> - 72.0-1
 - Update to 72.0 build3
 
diff --git a/sources b/sources
index a823c79..3f5e0c7 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
-SHA512 (firefox-72.0.source.tar.xz) = 77f55c4fb366c7050de32e82a98e16c566ffa8003ba48e6e5d734d08437a6badeaf63a5948224c18d89ff8c2b6ae6a64aad2a63e319a0a0cc0918c53165c0a46
-SHA512 (firefox-langpacks-72.0-20200103.tar.xz) = e86c7848051154e033232d3d3766db07f328c2f71c4151898a8631c4834b04682ae051bb582e1d8aeaceebf37e90904e129045ee3d6aba3fd7619e400cf87dce
+SHA512 (firefox-72.0.source.tar.xz) = a0591dbffc8995aca4af4664c26a966d96bb60ac17ce0d54a9de790a38f53d62314e9040982bd3224ce7af75c0c0f608967f6bb73e3ef55b01026cf7b59c11f3
+SHA512 (firefox-langpacks-72.0-20200106.tar.xz) = 0090f92a0fe045192bde662766645a85d74043b68fb68a7b18938cec0846c7e12c48787c3867129aeb521075e6eb96ef7c6d807a1382ca9ed01a810271b7fbe7
 SHA512 (cbindgen-vendor.tar.xz) = 88afa0bc6af525cbb46bc75578b90419b28b95b396d5002fbf299a78a173681b840096ff83ef6e48553d1a5e0aa04e79383ab4d09bf431f3b864fcbacc7de46d