diff --git a/pkgs/applications/networking/browsers/firefox/packages/firefox.nix b/pkgs/applications/networking/browsers/firefox/packages/firefox.nix
index be8bab8f21c8..1b678da80237 100644
--- a/pkgs/applications/networking/browsers/firefox/packages/firefox.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages/firefox.nix
@@ -9,10 +9,10 @@
 
 buildMozillaMach rec {
   pname = "firefox";
-  version = "156.0";
+  version = "156.0.1";
   src = fetchurl {
     url = "mirror://mozilla/firefox/releases/${version}/source/firefox-${version}.source.tar.xz";
-    sha512 = "0463304a0898670d248114f66f7c235166ae2397c3989a7c878c96f0c589fbbba1f1c87432daa22633b9fadd94394adf1dc37f0e67d22b066c75efe5eead75ce";
+    sha512 = "80a32a79268b672206f5477ca6bfde620cb7419b27aac090e01f06df06990ee0bbd81bb5c4aa78ac1d0edb26b133b1c6fa11cb6522445eccd70c82e719a24d5b";
   };
 
   meta = {