diff --git a/pkgs/applications/networking/browsers/firefox/packages.nix b/pkgs/applications/networking/browsers/firefox/packages.nix
index b9615d0b3829..3132abbb65f4 100644
--- a/pkgs/applications/networking/browsers/firefox/packages.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages.nix
@@ -94,11 +94,11 @@
 
   firefox-esr-115 = buildMozillaMach rec {
     pname = "firefox-esr-115";
-    version = "115.7.0esr";
+    version = "115.8.0esr";
     applicationName = "Mozilla Firefox ESR";
     src = fetchurl {
       url = "mirror://mozilla/firefox/releases/${version}/source/firefox-${version}.source.tar.xz";
-      sha512 = "d468d8ef117d76e0660c5359c3becf0502354c61bdaaeb4137d86f52b50143abec2ac4578af69afa5670700b57efff1c7323ca23e3339a9eaaa888dee7e8e922";
+      sha512 = "4b8c06b5eb3617700a72aaad8831d703a537fe600740f1acb8377bd0ce198a199938603fd7e6b2007671a578dfb24aa8f5c031c6c1ccf15d4a34562679eaa883";
     };
 
     meta = {