diff --git a/pkgs/applications/networking/browsers/firefox/packages.nix b/pkgs/applications/networking/browsers/firefox/packages.nix
index 9629c590122..321a530038e 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 = "88.0";
+    ffversion = "88.0.1";
     src = fetchurl {
       url = "mirror://mozilla/firefox/releases/${ffversion}/source/firefox-${ffversion}.source.tar.xz";
-      sha512 = "f58f44f2f0d0f54eae5ab4fa439205feb8b9209b1bf2ea2ae0c9691e9e583bae2cbd4033edb5bdf4e37eda5b95fca688499bed000fe26ced8ff4bbc49347ce31";
+      sha512 = "e2d7fc950ba49f225c83ee1d799d6318fcf16c33a3b7f40b85c49d5b7865f7e632c703e5fd227a303b56e2565d0796283ebb12d7fd1a02781dcaa45e84cea934";
     };
 
     meta = {