diff --git a/pkgs/applications/networking/browsers/firefox/no-buildconfig-ffx65.patch b/pkgs/applications/networking/browsers/firefox/no-buildconfig-ffx65.patch
new file mode 100644
index 000000000000..7d129dc78f98
--- /dev/null
+++ b/pkgs/applications/networking/browsers/firefox/no-buildconfig-ffx65.patch
@@ -0,0 +1,23 @@
+diff -ur firefox-65.0-orig/docshell/base/nsAboutRedirector.cpp firefox-65.0/docshell/base/nsAboutRedirector.cpp
+--- firefox-65.0-orig/docshell/base/nsAboutRedirector.cpp       2019-01-23 00:48:28.988747428 +0100
++++ firefox-65.0/docshell/base/nsAboutRedirector.cpp    2019-01-23 00:51:13.378188397 +0100
+@@ -67,8 +67,6 @@
+     {"about", "chrome://global/content/aboutAbout.xhtml", 0},
+     {"addons", "chrome://mozapps/content/extensions/extensions.xul",
+      nsIAboutModule::ALLOW_SCRIPT},
+-    {"buildconfig", "chrome://global/content/buildconfig.html",
+-     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT},
+     {"checkerboard", "chrome://global/content/aboutCheckerboard.xhtml",
+      nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+          nsIAboutModule::ALLOW_SCRIPT},
+diff -ur firefox-65.0-orig/toolkit/content/jar.mn firefox-65.0/toolkit/content/jar.mn
+--- firefox-65.0-orig/toolkit/content/jar.mn    2019-01-23 00:48:35.033372506 +0100
++++ firefox-65.0/toolkit/content/jar.mn 2019-01-23 00:50:45.126565924 +0100
+@@ -36,7 +36,6 @@
+    content/global/plugins.css
+    content/global/browser-child.js
+    content/global/browser-content.js
+-*   content/global/buildconfig.html
+    content/global/buildconfig.css
+    content/global/contentAreaUtils.js
+    content/global/datepicker.xhtml
diff --git a/pkgs/applications/networking/browsers/firefox/packages.nix b/pkgs/applications/networking/browsers/firefox/packages.nix
index a6e5651172d2..9538a5e28145 100644
--- a/pkgs/applications/networking/browsers/firefox/packages.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages.nix
@@ -14,14 +14,14 @@ rec {
 
   firefox = common rec {
     pname = "firefox";
-    ffversion = "64.0.2";
+    ffversion = "65.0";
     src = fetchurl {
       url = "mirror://mozilla/firefox/releases/${ffversion}/source/firefox-${ffversion}.source.tar.xz";
-      sha512 = "2xvzbx20i2qwld04g3wl9j6j8bkcja3i83sf9cpngayllhrjki29020izrwjxrgm0z3isg7zijw656v1v2zzmhlfkpkbk71n2gjj7md";
+      sha512 = "39bx76whgf53rkfqqy8gfhd44wikh89zpnqr930v4grqg3v0pfr8mbvp7xzjjlf5r7bski0wxibn9vyyy273fp99zyj1w2m5ihh9aqh";
     };
 
     patches = nixpkgsPatches ++ [
-      ./no-buildconfig.patch
+      ./no-buildconfig-ffx65.patch
     ];
 
     extraNativeBuildInputs = [ python3 ];