diff --git a/pkgs/additional/firefox-extensions/default.nix b/pkgs/additional/firefox-extensions/default.nix
index 14d20743..edfa4e6f 100644
--- a/pkgs/additional/firefox-extensions/default.nix
+++ b/pkgs/additional/firefox-extensions/default.nix
@@ -145,8 +145,8 @@ in (lib.makeScope newScope (self: with self; {
       extid = "webextension@metamask.io";
       pname = "ether-metamask";
       url = "https://github.com/MetaMask/metamask-extension/releases/download/v${version}/metamask-firefox-${version}.zip";
-      version = "11.16.12";
-      hash = "sha256-KWzPNnVmdF5Nd9/gBMZmovaW3Py/DTiW/brj19l/p1k=";
+      version = "11.16.13";
+      hash = "sha256-aiWFfGGbjFfKEJSe2wnCfxSABs6ELQ2h0x90IAF3wec=";
     };
     fx_cast = fetchVersionedAddon rec {
       extid = "fx_cast@matt.tf";