diff --git a/pkgs/applications/networking/browsers/palemoon/default.nix b/pkgs/applications/networking/browsers/palemoon/default.nix
index b967777883c..4f179c29996 100644
--- a/pkgs/applications/networking/browsers/palemoon/default.nix
+++ b/pkgs/applications/networking/browsers/palemoon/default.nix
@@ -10,14 +10,14 @@
 
 stdenv.mkDerivation rec {
   name = "palemoon-${version}";
-  version = "27.4.1";
+  version = "27.4.2";
 
   src = fetchFromGitHub {
     name   = "palemoon-src";
     owner  = "MoonchildProductions";
     repo   = "Pale-Moon";
     rev    = version + "_Release";
-    sha256 = "0sgy0iq038pj676w6k5nwbavrdmrznhydjibdpj6irdz5qxxdgjn";
+    sha256 = "155c1a76kkx9p8cnz9d33xx30asjr32x10cccx0gyq1lm1b9ffbl";
   };
 
   desktopItem = makeDesktopItem {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e4474b098c0..42d7cde5225 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -15697,7 +15697,10 @@ with pkgs;
 
   osquery = callPackage ../tools/system/osquery { };
 
-  palemoon = callPackage ../applications/networking/browsers/palemoon { };
+  palemoon = callPackage ../applications/networking/browsers/palemoon {
+    # https://forum.palemoon.org/viewtopic.php?f=57&t=15296#p111146
+    stdenv = overrideCC stdenv gcc49;
+  };
 
   pamix = callPackage ../applications/audio/pamix { };