diff --git a/pkgs/development/interpreters/spidermonkey/91.nix b/pkgs/development/interpreters/spidermonkey/91.nix
index b78fcc39b1a8..125c60f23724 100644
--- a/pkgs/development/interpreters/spidermonkey/91.nix
+++ b/pkgs/development/interpreters/spidermonkey/91.nix
@@ -23,11 +23,11 @@
 
 stdenv.mkDerivation rec {
   pname = "spidermonkey";
-  version = "91.10.0";
+  version = "91.11.0";
 
   src = fetchurl {
     url = "mirror://mozilla/firefox/releases/${version}esr/source/firefox-${version}esr.source.tar.xz";
-    sha512 = "8344b829d7bd86250afdd4cb582e27ed5705b3ef48aec50b9a39abc17deba86c9fd721f4667f5c2155e3d7cd1d6e1f82ff8e218ced3a16a4e06bb414ee0690f8";
+    sha512 = "bff3a399c03bd1cdaaec0b6963b1558aa35b6338b6c02042ffd65fec0aedd344d01718692e881332f5f352c32da15ba09a20a09ee072200b47ae840bc0585a96";
   };
 
   outputs = [ "out" "dev" ];