diff --git a/pkgs/applications/networking/browsers/firefox-bin/beta_sources.nix b/pkgs/applications/networking/browsers/firefox-bin/beta_sources.nix
index 7548eb94fa6..98cf28ec3e1 100644
--- a/pkgs/applications/networking/browsers/firefox-bin/beta_sources.nix
+++ b/pkgs/applications/networking/browsers/firefox-bin/beta_sources.nix
@@ -1,965 +1,965 @@
 {
-  version = "81.0b4";
+  version = "84.0b4";
   sources = [
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/ach/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/ach/firefox-84.0b4.tar.bz2";
       locale = "ach";
       arch = "linux-x86_64";
-      sha256 = "4b133dd14e8ce1b934e482c4f7f7b5ca4b58751181bed89f6573ba5994ebe644";
+      sha256 = "da9290899d245d86b3d2d378072af403106596ae1e02a36d40a93deea9e57000";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/af/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/af/firefox-84.0b4.tar.bz2";
       locale = "af";
       arch = "linux-x86_64";
-      sha256 = "8e50a0845eb058ee853fe40b13c88d764e721f7f8ac2eb54695049ab2a66e3e9";
+      sha256 = "28810946bde4c2335714c0f8b0dffad1a1650c167370e38c6eb5e2ee5d2e54be";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/an/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/an/firefox-84.0b4.tar.bz2";
       locale = "an";
       arch = "linux-x86_64";
-      sha256 = "3edf8e157cac424b1cbfff019240877e7b7c3bf5ed1b576580569c155c5dd660";
+      sha256 = "d32e9e13b2c1f484686d9394f20a87e2c1d833703e0115de1f9c8c552d1e9d8a";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/ar/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/ar/firefox-84.0b4.tar.bz2";
       locale = "ar";
       arch = "linux-x86_64";
-      sha256 = "b2167ff357963e3295eed2ed423a1c3bcf62d645329b8f4cf817ad3c0e101c97";
+      sha256 = "de8348caf98ca0551f3f080eb32ef94c00706676bc8df1723377d98f10221e56";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/ast/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/ast/firefox-84.0b4.tar.bz2";
       locale = "ast";
       arch = "linux-x86_64";
-      sha256 = "805a87a99a417ff4b762c01a9a2b88c7963f53a04fc19b42015db304b15f4bbe";
+      sha256 = "104cc96b0e14c030848be4bc07a1b2b836a241e9ddba581b9ca24018c54356ee";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/az/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/az/firefox-84.0b4.tar.bz2";
       locale = "az";
       arch = "linux-x86_64";
-      sha256 = "79c61c9515a683731649bcb5d36b26b95dd56165765e5a952339910310c9d259";
+      sha256 = "e96087b52f1dc18c8bd29d486faa00ad06a2165d1e14cbd47e37cafb40602a87";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/be/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/be/firefox-84.0b4.tar.bz2";
       locale = "be";
       arch = "linux-x86_64";
-      sha256 = "318fece7d1ad734f6a19faa7003e060b1254b31bf62e59580c70a64c4a167ec6";
+      sha256 = "d67c2c1556b6859e0acae5b69b3b7eeac77b3bb1594b48682a97a72742c79d05";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/bg/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/bg/firefox-84.0b4.tar.bz2";
       locale = "bg";
       arch = "linux-x86_64";
-      sha256 = "55616606306dbd0933240d718fef8e83004fd65e4f53dd18f1601f09d0b94e92";
+      sha256 = "b3bad1b330a5d4c515b37cddb3e89e538c5cd66ffce68dbf8d1e9adaf4881431";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/bn/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/bn/firefox-84.0b4.tar.bz2";
       locale = "bn";
       arch = "linux-x86_64";
-      sha256 = "c38fdef89f6aee7bf03362d2edfe4dcc665d540b1e1dc1dad8c53db20d70087d";
+      sha256 = "9c50c4e12061279133177ade4b22b7e2bb7e14dcc1875464f57efb7c7e360bf7";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/br/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/br/firefox-84.0b4.tar.bz2";
       locale = "br";
       arch = "linux-x86_64";
-      sha256 = "c5ac1c8e9dc2f4c5a1a2b6e33bf699a823a9422bce46922bc36222700a29d2e5";
+      sha256 = "79eb76af707b26fa4d46acf11d0be25ccd144abda6c853373c9ec0cc872c2a8f";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/bs/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/bs/firefox-84.0b4.tar.bz2";
       locale = "bs";
       arch = "linux-x86_64";
-      sha256 = "a18718ef7f467ed87c76816fb6797165db3e06bc166c5e88b526c9f2ce5c1d19";
+      sha256 = "2cbf15a604f90c4a6212f5da251372d09e2247f5ed338193ff93a94695bca308";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/ca-valencia/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/ca-valencia/firefox-84.0b4.tar.bz2";
       locale = "ca-valencia";
       arch = "linux-x86_64";
-      sha256 = "fcfccd0714c965801ce468f6817bf37eb074064e6e0b616c81be7218a6b632fc";
+      sha256 = "a9b6cacf6ee8a6a1f733f3ff3741c1bb12eff823664279205906e8e59b646679";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/ca/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/ca/firefox-84.0b4.tar.bz2";
       locale = "ca";
       arch = "linux-x86_64";
-      sha256 = "5f08a2b2d357d5a6828865913b9e28fe90bda7a8ce17a0ea60effb25b8441b7a";
+      sha256 = "1ea49a5d59129c820f359fbad2253e051adbb260cedd4b62bb20122562466bfd";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/cak/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/cak/firefox-84.0b4.tar.bz2";
       locale = "cak";
       arch = "linux-x86_64";
-      sha256 = "db41156b75e1148527c51b915e3d9367d1c36a8d24a52132d1cc9cfe63bd9db6";
+      sha256 = "b18651df9ae2e16ea9855c30fa393dd34103cf338a515d41d3c1802e52fb92a1";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/cs/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/cs/firefox-84.0b4.tar.bz2";
       locale = "cs";
       arch = "linux-x86_64";
-      sha256 = "d3287f28964581e63a3b1a5484e47e8ef33c136b39f13e07d6f3d555c27864cb";
+      sha256 = "4dca051e5349372d6caf5a7f6e8e6e12fe42bf96110a1c6e2f7f6e408f365b80";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/cy/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/cy/firefox-84.0b4.tar.bz2";
       locale = "cy";
       arch = "linux-x86_64";
-      sha256 = "f41fd34cf1cc72d5fc80113cdc9fae7f03f434e45e990e17a94dd68463464c49";
+      sha256 = "3117d47bcec1cf0f5a547a33c62ca5ecfee34435c13a478f23d1d9f0ac187f4f";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/da/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/da/firefox-84.0b4.tar.bz2";
       locale = "da";
       arch = "linux-x86_64";
-      sha256 = "dbbf1611913315ac5294f400c727cd5afbc832efbea56bd839b77cd4d6a5b823";
+      sha256 = "34a38c76997bdd41e6b12cebf08345e7cd19838bd92f5a8d082ba3087cb063c7";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/de/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/de/firefox-84.0b4.tar.bz2";
       locale = "de";
       arch = "linux-x86_64";
-      sha256 = "1047799de5b42b5cb0827371872b7e85b93a4474bde9288da54a573841e156bd";
+      sha256 = "65e417603cf383d92058b8976c1f6499dc5804d02a22bb639e416c4e730b4a62";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/dsb/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/dsb/firefox-84.0b4.tar.bz2";
       locale = "dsb";
       arch = "linux-x86_64";
-      sha256 = "602eaa32d32db35d6a6d07f1c0cc53eaa4e432b7ab81d1f23b47d3125ac98d24";
+      sha256 = "08dacb91773d7b49eb8f08668627badae2967193c441ff2fb6b9d88063c5ffb9";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/el/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/el/firefox-84.0b4.tar.bz2";
       locale = "el";
       arch = "linux-x86_64";
-      sha256 = "8a460f9542e213b1605265c6497742e7d55213ac91b42d00a15b3123b47754ef";
+      sha256 = "78e870b673c204e4d9fca2a3fbab06031c724a8b0696a3b6e2dea5ac07a5bb88";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/en-CA/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/en-CA/firefox-84.0b4.tar.bz2";
       locale = "en-CA";
       arch = "linux-x86_64";
-      sha256 = "9bcc44ca3f4192a2a7a001f27db6884dd481551663b6d0c348ed0b9281dabe87";
+      sha256 = "4c862eb5c53e65af1ddc212a093eb23e33653341fa7db53d935ed8482637aed8";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/en-GB/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/en-GB/firefox-84.0b4.tar.bz2";
       locale = "en-GB";
       arch = "linux-x86_64";
-      sha256 = "9d241d56362ec52619ce02cdd2f11dc90c2e0f7c515c707ea56eca2e8f0eb306";
+      sha256 = "f505cf16328603d0164e330fcef60fcfeccdad186d1f91e0b4cee1b8cc7c740d";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/en-US/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/en-US/firefox-84.0b4.tar.bz2";
       locale = "en-US";
       arch = "linux-x86_64";
-      sha256 = "28972b08f8b3f2d19f5d50a2c9275fc459fc3e57df11c884149d1fdb9d99300b";
+      sha256 = "f0561469f04ab83dd52ae4e3a8ca451d6569845e37d9e04c5a91085654661f8a";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/eo/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/eo/firefox-84.0b4.tar.bz2";
       locale = "eo";
       arch = "linux-x86_64";
-      sha256 = "013caa4590462b4bc5dc09cb963cfd85cba4b5419111cdc87316574ca5691e80";
+      sha256 = "c64d227d6b21876ea48182795d6fd8ec3ca486e5328629a0bbfb936e8463b0a8";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/es-AR/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/es-AR/firefox-84.0b4.tar.bz2";
       locale = "es-AR";
       arch = "linux-x86_64";
-      sha256 = "d6970ccf4d58e2f1219cb0d43a8788084d0863f0f349ab3292e182fb0201e860";
+      sha256 = "73b45f6b8d1e53bef003b3e77cc1217b8a85dde49cb0900b4fa2991895e5c184";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/es-CL/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/es-CL/firefox-84.0b4.tar.bz2";
       locale = "es-CL";
       arch = "linux-x86_64";
-      sha256 = "76fb3c865b3efa1da1d34c8caa7b56b5b6d0af2cbbaeaef873fa96d2b8c93bb1";
+      sha256 = "e7025e4c5fc311aae2798da99ec5e5863bca5ad8b8460981cef86e29ae37d74a";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/es-ES/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/es-ES/firefox-84.0b4.tar.bz2";
       locale = "es-ES";
       arch = "linux-x86_64";
-      sha256 = "7b41a2b297df4f0f6d4f44e1eb0ea0cbf02454382d0994f119a77876c578c4b6";
+      sha256 = "e819644eb6337255004fda8286e1f2ed898423c4b97694c8355c28f4d449da61";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/es-MX/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/es-MX/firefox-84.0b4.tar.bz2";
       locale = "es-MX";
       arch = "linux-x86_64";
-      sha256 = "733b90640a30df66700397ab0cc2045fcbc25af94ef9f36463a191228b511b77";
+      sha256 = "07de091ca3b06b94e35b84add7fbc5c8fa6ea84ddfe548e5f55b3bc7980a9bd3";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/et/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/et/firefox-84.0b4.tar.bz2";
       locale = "et";
       arch = "linux-x86_64";
-      sha256 = "027286d744b1d9f21157d8242445ccd7610a08d8d541d64635fc16549aac1b4d";
+      sha256 = "d6af9ab39f1a13efc772cbb63dd731dcf988c10f13649f348d7ddb3f6ab6ca60";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/eu/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/eu/firefox-84.0b4.tar.bz2";
       locale = "eu";
       arch = "linux-x86_64";
-      sha256 = "ff555da3aaf1abb2c384772b309fb4129dad57b9fd523fcabef5b2743d3063ce";
+      sha256 = "110e667568429dd2b0c752962e1148884c44aaef9939926c6b0f49ba5bdb1182";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/fa/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/fa/firefox-84.0b4.tar.bz2";
       locale = "fa";
       arch = "linux-x86_64";
-      sha256 = "c99f9297568f93eda17058d96dfaf83e587907be9b5005e8f649f693662e4fb6";
+      sha256 = "f7a783f12bb08ccb06074f903bb2eaaab13b348c6a2950a9699beee28ad97b5e";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/ff/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/ff/firefox-84.0b4.tar.bz2";
       locale = "ff";
       arch = "linux-x86_64";
-      sha256 = "91658b195a622afa3c6fde535391eff1aa6b70f4c0cccc5c55e56e6d66459435";
+      sha256 = "b2e47bc8ae8d1e54a1b5799a87b4742d049696edd9913f0cc6beb52a89cc261d";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/fi/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/fi/firefox-84.0b4.tar.bz2";
       locale = "fi";
       arch = "linux-x86_64";
-      sha256 = "cbc70d2051c96813ab081251c339f6cacd29ff26bdd8174b35caf9905a874635";
+      sha256 = "f5ee09f1b9d41506ad1023ad05dbdee95ac049eb4bfd38dd99c06cf682e111a8";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/fr/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/fr/firefox-84.0b4.tar.bz2";
       locale = "fr";
       arch = "linux-x86_64";
-      sha256 = "51890621c8c3c0e40103a10e705adbc860937e5dbbb8a3984eb71a5cae3ed63b";
+      sha256 = "f8c33819a6ceab041bed80f1663d94a80ee3bdb6e859eab1eb8ec9d0b67f4222";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-x86_64/fy-NL/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-x86_64/fy-NL/firefox-84.0b4.tar.bz2";
       locale = "fy-NL";
       arch = "linux-x86_64";
-      sha256 = "5c3a982a51951901732ec7684514be233fe1c44780531fb38f7205724c241387";
+      sha256 = "6ed233042e570e9a04ecc1e25f6211deb7685c117db75f32a541076d95d1cebf";
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       arch = "linux-i686";
-      sha256 = "8c2be1458aa4077264ec946181d7ab3160086d12c821dc3d5fa3bbba46de3574";
+      sha256 = "21e2dca4e194a38de97b9b717150441bdd32466ee43e721f41afde004bc8e3e2";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/tl/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/tl/firefox-84.0b4.tar.bz2";
       locale = "tl";
       arch = "linux-i686";
-      sha256 = "e51e4cf97b79b3720129ed9467b57d393a4ffd5698a9a941cd28feffa1d166fa";
+      sha256 = "9f4dc351f5244b0837a95d4afbfa0af373fe056e5eb106a2b177a57ba4c85ee7";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/tr/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/tr/firefox-84.0b4.tar.bz2";
       locale = "tr";
       arch = "linux-i686";
-      sha256 = "9f0a494434bc3d78c43428bc535517b5d61743326fbdbf1836a84f353408a54e";
+      sha256 = "50cabe6fea43e2212d0b0a9a5a382e085fdabc3ff6b6b0694b8f9d3d327c3ffc";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/trs/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/trs/firefox-84.0b4.tar.bz2";
       locale = "trs";
       arch = "linux-i686";
-      sha256 = "24cadb7247a254595c29aebe60784d37061465f2c960a8d036096c6df71e4186";
+      sha256 = "c4db90a9a0677430fa591cc387bf1255f260208a4907cb760649cd7a6db03808";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/uk/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/uk/firefox-84.0b4.tar.bz2";
       locale = "uk";
       arch = "linux-i686";
-      sha256 = "6aa85e7119fd3ca00cd87d898eb93d954b1e58d01edf14106c41df98bdca4d99";
+      sha256 = "7c92d619dd827a9f7ef9297f784cff582aba44684dca91c3b9873337b4318fb3";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/ur/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/ur/firefox-84.0b4.tar.bz2";
       locale = "ur";
       arch = "linux-i686";
-      sha256 = "6b188379acb89178d08e827a60244c2298eae62434991d53378327c36829fa01";
+      sha256 = "ef46130577072c6fe6b14aa0710c75344dea46124093f483db47cbc8c9cb4ec6";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/uz/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/uz/firefox-84.0b4.tar.bz2";
       locale = "uz";
       arch = "linux-i686";
-      sha256 = "782ced50737f68a9fa6db854cde83ef7bbc6f95776a44918248efcedd95230ec";
+      sha256 = "34c28440a7772a7fcf7f920be760f92057d813648372fe7cb8ae9f2c3fb3a846";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/vi/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/vi/firefox-84.0b4.tar.bz2";
       locale = "vi";
       arch = "linux-i686";
-      sha256 = "37b600b306c901080f659955163b1696f5129e71bc3c5f65dc74d280ee6e3024";
+      sha256 = "c02c1737b56e1ae4f20ffa9abd392fb69f19d68348341977d0f39bfefab465b6";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/xh/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/xh/firefox-84.0b4.tar.bz2";
       locale = "xh";
       arch = "linux-i686";
-      sha256 = "ebdfb9a50a5a7cad0508ade647ef3f81e18837d6b84212de6393a854bbfc652f";
+      sha256 = "6be6defb443480c536639d99d124d8c636d70f049f126a793d627c131035c9c2";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/zh-CN/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/zh-CN/firefox-84.0b4.tar.bz2";
       locale = "zh-CN";
       arch = "linux-i686";
-      sha256 = "fbc7b8952fa6d2d73b736abf4e60a10512eb983ea4588f7e746bff9512b953ce";
+      sha256 = "454af78f3ea4aa00676c4b97dff278dd404116e1da7993b5a2593167d11db885";
     }
-    { url = "http://archive.mozilla.org/pub/firefox/releases/81.0b4/linux-i686/zh-TW/firefox-81.0b4.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/firefox/releases/84.0b4/linux-i686/zh-TW/firefox-84.0b4.tar.bz2";
       locale = "zh-TW";
       arch = "linux-i686";
-      sha256 = "5c29c56ef6480703ef9b6a2dc3cae8bc45b2fc01495ba099bd1ee28bbcdce55a";
+      sha256 = "7e6b1b0ad56916759b01df06b23bb6a23b0c59815538cb1edb3e95edf7b772d7";
     }
     ];
 }
diff --git a/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix b/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix
index 5b61afe0241..5f16fb1914a 100644
--- a/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix
+++ b/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix
@@ -1,965 +1,965 @@
 {
-  version = "80.0b8";
+  version = "84.0b4";
   sources = [
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/ach/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/ach/firefox-84.0b4.tar.bz2";
       locale = "ach";
       arch = "linux-x86_64";
-      sha256 = "f9b686c12733f6be1c96fcc71727f55e9c79f417df64a4b703c7fadaaf3a85e6";
+      sha256 = "6b548e6e2753e4a0ad2ad5968c063b6f4c7866c297314ba9e807161f7c757275";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/af/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/af/firefox-84.0b4.tar.bz2";
       locale = "af";
       arch = "linux-x86_64";
-      sha256 = "dc73e323741c3612607812878d24450b0b5d5274a8e58d25a9c3957d457b2431";
+      sha256 = "f75bfba14ae1a248918c0e433c343328305eb6372dd80aa343506437f631f2b6";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/an/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/an/firefox-84.0b4.tar.bz2";
       locale = "an";
       arch = "linux-x86_64";
-      sha256 = "a84e966f8ac0373f63c7fd76148e16c56af645bb9b83cccee91e20065883f92d";
+      sha256 = "d2e972f7d345720a89081fce3b9257942c93bdeb2a5c7dcede3c30282407f159";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/ar/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/ar/firefox-84.0b4.tar.bz2";
       locale = "ar";
       arch = "linux-x86_64";
-      sha256 = "9949f976617961c3853fc6e4596bac9a7c18d66b72df22b9b217dbccaea6b0c7";
+      sha256 = "2731722dbd097875bb797a555e9a0ba3843deb159f7917626d8e97c1a3005e7a";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/ast/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/ast/firefox-84.0b4.tar.bz2";
       locale = "ast";
       arch = "linux-x86_64";
-      sha256 = "89f277e215e11c7efd270c6f0952292db5c85057a50b48a3753fb16c1322587d";
+      sha256 = "4d626c7f293226e9e18e28d069b40f75914f9387553d54588c34e7dd70ce1ae9";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/az/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/az/firefox-84.0b4.tar.bz2";
       locale = "az";
       arch = "linux-x86_64";
-      sha256 = "44c84f6e00f5672c4f4b5d26d727da4aa0e8f5bbdcb4ab484be4015b5ea4bb55";
+      sha256 = "01a647694a6aa2bbd8ad531197565593783946ad248d34f86550d28b8be5b52b";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/be/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/be/firefox-84.0b4.tar.bz2";
       locale = "be";
       arch = "linux-x86_64";
-      sha256 = "cbcb4dbf931214f01167705529ce410935a378ddf76f32c04a16a019a04dcec6";
+      sha256 = "49639180573943a4bd4d0672c5dec969850b4bfceca00c37575c6d0f2d589a7e";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/bg/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/bg/firefox-84.0b4.tar.bz2";
       locale = "bg";
       arch = "linux-x86_64";
-      sha256 = "6af931944901fc143d9958538aecfcfa5c8604aa928dcad7ff4062e4752b2861";
+      sha256 = "c575261553cbc6afcc60650e21605e1298a122b975f6b6b2845a35725fe2ff25";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/bn/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/bn/firefox-84.0b4.tar.bz2";
       locale = "bn";
       arch = "linux-x86_64";
-      sha256 = "5f44e1a8abf75708aed3c73c217ac6aa31520c32eae8c6a2c28838d4591fd779";
+      sha256 = "5c5ebe2bfaaa7ea16ca4285d9806f3ecef1b29b61e5018920db27e050a4ef521";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/br/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/br/firefox-84.0b4.tar.bz2";
       locale = "br";
       arch = "linux-x86_64";
-      sha256 = "7f345832f046770ff20457c902b499a6d2d3650e3cbad696d0a0ce81371b8710";
+      sha256 = "29c764eff10d3756f258f0ac5cc9bec14cc46bb66d804eaca5548cebbaa067d6";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/bs/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/bs/firefox-84.0b4.tar.bz2";
       locale = "bs";
       arch = "linux-x86_64";
-      sha256 = "539e441b74c8897113d8fe36076473f61cd26f9be24d5197dfa8f92a5ce68169";
+      sha256 = "7730a4c1e7d4d791fe35f000bba72d3652fe7289eb95f5e77b426995a63ef412";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/ca-valencia/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/ca-valencia/firefox-84.0b4.tar.bz2";
       locale = "ca-valencia";
       arch = "linux-x86_64";
-      sha256 = "8f8581a6888dbdce1d357e8a289a0befa20e1679a8cc7bff13ef237bb5498ec9";
+      sha256 = "fe90ef596de4262d803fa282cce7b30c1c9bde896b31d7e47d8e862e38ca1037";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/ca/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/ca/firefox-84.0b4.tar.bz2";
       locale = "ca";
       arch = "linux-x86_64";
-      sha256 = "5f3b7553a62465e18e103ffce48f75cc58489349c3cf966e3ba0138ce14d7b8c";
+      sha256 = "f435a47a36affd5b59c7a6543f1c1c7e0dfead407138967a0f295dcd6093bed6";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/cak/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/cak/firefox-84.0b4.tar.bz2";
       locale = "cak";
       arch = "linux-x86_64";
-      sha256 = "a1269157c6ec005756c1e0f0bbbf61a524f03b4c69022a2c49661c0375a78839";
+      sha256 = "ec4968ccfaea0a975a4f56aaae8290387707570cf899d078438ac2cb98244fe7";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/cs/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/cs/firefox-84.0b4.tar.bz2";
       locale = "cs";
       arch = "linux-x86_64";
-      sha256 = "15a26b351b40964089c8eed80fd5cadafd66ef39abbf19ce50a8b7ef5bdc661d";
+      sha256 = "357c5372b6fade862671db66b90b3382749153c641bcd7c99f7b2a3c68c143fb";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/cy/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/cy/firefox-84.0b4.tar.bz2";
       locale = "cy";
       arch = "linux-x86_64";
-      sha256 = "8400fc3e6192f2095d4a57bf354dbeee1b771a8aa61ab0d865956cdddfafcaf6";
+      sha256 = "5ce8f5e451fb2271635a2cada6c7b54a53936a1b912b777d54ce640cecb3d37e";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/da/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/da/firefox-84.0b4.tar.bz2";
       locale = "da";
       arch = "linux-x86_64";
-      sha256 = "83c7818e65c32723c2bd0a4f65a33f19941fdcc5d84055cf2532cf8c4592020b";
+      sha256 = "ac790fdafd2875d180be2375937b38546dd77d6e9b8428f4d44a2b780b4db14f";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/de/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/de/firefox-84.0b4.tar.bz2";
       locale = "de";
       arch = "linux-x86_64";
-      sha256 = "589b9249ffcff23c388716c24cd09baa8b309d771b97f4dfcf9c979ad9a3342a";
+      sha256 = "6c5205a4d74da62927648f95a069ed6a68ab012f2cbe0c4cded3de8d40c3d325";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/dsb/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/dsb/firefox-84.0b4.tar.bz2";
       locale = "dsb";
       arch = "linux-x86_64";
-      sha256 = "df57cc439fa74d93921c7c1265b7335e23c0df545e78eccce34e06fa528e75b3";
+      sha256 = "516308e19f0373b3ff75e2e114fc7f1d2d370cd4a0f63f8bf74704eced2e0d56";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/el/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/el/firefox-84.0b4.tar.bz2";
       locale = "el";
       arch = "linux-x86_64";
-      sha256 = "7a2b0380cc8733e7d6eb5adc228fd543d8459d7b7d9ffbcb39b73dffd395e5de";
+      sha256 = "d35a67fcfc8c5c334f55d12810bdcbaab6b9cb5fd3aaa75c79977accf7429445";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/en-CA/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/en-CA/firefox-84.0b4.tar.bz2";
       locale = "en-CA";
       arch = "linux-x86_64";
-      sha256 = "6e747524fb05aa987e0c24b21fc9ab27901f1cb205b7cffa100d5bdb7ba130c6";
+      sha256 = "e8d36d76d791108a6e514a649eebc9c4814aa8ccd4b21728e56a4e9839eef803";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/en-GB/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/en-GB/firefox-84.0b4.tar.bz2";
       locale = "en-GB";
       arch = "linux-x86_64";
-      sha256 = "4e95f0c08c44e6d4830abaf9c2d25b10e63753f1dd48e192d4464a03b82a68de";
+      sha256 = "9bb695670d7ee7a3a35d9adeef579e33f076fc1eca717149a5078134f584bf70";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/en-US/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/en-US/firefox-84.0b4.tar.bz2";
       locale = "en-US";
       arch = "linux-x86_64";
-      sha256 = "2b75be9a3961e734ae16e591c367e76828e9a3adc458629db69fe5fb32a8b476";
+      sha256 = "595b1004380ac96663c2d8889f02a681ad7c5c56e0f12cde4a26a6453d0a0ec5";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/eo/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/eo/firefox-84.0b4.tar.bz2";
       locale = "eo";
       arch = "linux-x86_64";
-      sha256 = "2fb71c60605c4c56432c262f62d72509d520787a7e86a45b496a68e55d08823b";
+      sha256 = "cb6ac56d074e91e2f5154c275c4c3a46e4392586451fdbba52fb419bbe085c64";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/80.0b8/linux-x86_64/es-AR/firefox-80.0b8.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/84.0b4/linux-x86_64/es-AR/firefox-84.0b4.tar.bz2";
       locale = "es-AR";
       arch = "linux-x86_64";
-      sha256 = "3aefd418e20dbb7ae0b8aa87d15be140b4ddd7f6572ae0ca691b98f7f919361b";
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 }