diff --git a/firefox.spec b/firefox.spec
index 90e226e..8fee2e5 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -117,13 +117,13 @@ ExcludeArch: s390x
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        77.0.1
-Release:        3%{?nss_tag}%{?dist}
+Version:        78.0
+Release:        1%{?nss_tag}%{?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}-20200603.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20200629.tar.xz
 %endif
 Source2:        cbindgen-vendor.tar.xz
 Source10:       firefox-mozconfig
@@ -983,6 +983,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
+* Mon Jun 29 2020 Jan Horak <jhorak@redhat.com> - 78.0-1
+- Update to 78.0 build2
+
 * Tue Jun 23 2020 Martin Stransky <stransky@redhat.com> - 77.0.1-3
 - Build with PGO/LTO again.