diff --git a/extra/firefox-esr/checksums b/extra/firefox-esr/checksums
index 1c024302..9aa1c460 100644
--- a/extra/firefox-esr/checksums
+++ b/extra/firefox-esr/checksums
@@ -1,4 +1,4 @@
-8e3cf0bbf1062768134db2eb10ab774731ca5ec6694b65def82234bb0a9170fc
+1978eedd975b1cf95bd4a04b2381560d1ad9a4223032717f23fac26e3458a760
 f0611136bee505811e9ca11ca7ac188ef5323a8e2ef19cffd3edb3cf08fd791e
 3dce6601b495f5b3d45b59f7d2492a340ee7e84b5beca17e48f862502bd5603f
 9b4c5c6bd57198abc4c846a1000603007f17e85577d861fd67ee11762a7c1c1b
diff --git a/extra/firefox-esr/sources b/extra/firefox-esr/sources
index 38050243..8893ee96 100644
--- a/extra/firefox-esr/sources
+++ b/extra/firefox-esr/sources
@@ -1,4 +1,4 @@
-https://ftp.mozilla.org/pub/firefox/releases/78.4.0esr/source/firefox-78.4.0esr.source.tar.xz
+https://ftp.mozilla.org/pub/firefox/releases/78.4.1esr/source/firefox-78.4.1esr.source.tar.xz
 https://ftp.gnu.org/gnu/autoconf/autoconf-2.13.tar.gz autoconf2.13/
 https://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz yasm/
 patches/no-dbus.patch
diff --git a/extra/firefox-esr/version b/extra/firefox-esr/version
index 1a0207fc..50f93b6c 100644
--- a/extra/firefox-esr/version
+++ b/extra/firefox-esr/version
@@ -1 +1 @@
-78.4.0esr 1
+78.4.1esr 1