diff --git a/pkgs/applications/networking/browsers/firefox/packages.nix b/pkgs/applications/networking/browsers/firefox/packages.nix
index 5786e4113946..b39cc303ffac 100644
--- a/pkgs/applications/networking/browsers/firefox/packages.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages.nix
@@ -7,10 +7,10 @@ in
 rec {
   firefox = common rec {
     pname = "firefox";
-    ffversion = "82.0.3";
+    ffversion = "83.0";
     src = fetchurl {
       url = "mirror://mozilla/firefox/releases/${ffversion}/source/firefox-${ffversion}.source.tar.xz";
-      sha512 = "0j5s5fkph9bm87lv53d4xvfj02qjfqzj5graxcc8air49iqswfmqjdzghna6bj9m8fbn6f5klgm6jbrmavdsycbps0y88x23b6kab5i";
+      sha512 = "3va5a9471677jfzkhqp8xkba45n0bcpphbabhqbcbnps6p85m3y98pl5jy9q7cpq3a6gxc4ax7bp90yz2nfvfq7i64iz397xpprri2a";
     };
 
     patches = [