diff --git a/extra/firefox/checksums b/extra/firefox/checksums
index 7e74ed1d..3bb19b34 100644
--- a/extra/firefox/checksums
+++ b/extra/firefox/checksums
@@ -1,3 +1,3 @@
-596b085e32a2d683ba960e161ea65c6271f90f576d4bf956e0d48e83af992c21
+9328745012178aee5a4f47c833539f7872cc6e0f20a853568a313e60cabd1ec8
 f0611136bee505811e9ca11ca7ac188ef5323a8e2ef19cffd3edb3cf08fd791e
 3dce6601b495f5b3d45b59f7d2492a340ee7e84b5beca17e48f862502bd5603f
diff --git a/extra/firefox/sources b/extra/firefox/sources
index 4db8c371..2099a0df 100644
--- a/extra/firefox/sources
+++ b/extra/firefox/sources
@@ -1,3 +1,3 @@
-https://ftp.mozilla.org/pub/firefox/releases/80.0.1/source/firefox-80.0.1.source.tar.xz
+https://ftp.mozilla.org/pub/firefox/releases/81.0/source/firefox-81.0.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/
diff --git a/extra/firefox/version b/extra/firefox/version
index 50c06376..34e395fe 100644
--- a/extra/firefox/version
+++ b/extra/firefox/version
@@ -1 +1 @@
-80.0.1 1
+81.0 1