diff --git a/pkgs/by-name/gl/gltron/package.nix b/pkgs/by-name/gl/gltron/package.nix
index c09c8d7e460c..39ecaceb7c9e 100644
--- a/pkgs/by-name/gl/gltron/package.nix
+++ b/pkgs/by-name/gl/gltron/package.nix
@@ -20,7 +20,16 @@ stdenv.mkDerivation rec {
     sha256 = "e0c8ebb41a18a1f8d7302a9c2cb466f5b1dd63e9a9966c769075e6b6bdad8bb0";
   };
 
-  patches = [ ./gentoo-prototypes.patch ];
+  patches = [
+    ./gentoo-prototypes.patch
+
+    # gcc-14 build fix: https://sourceforge.net/p/gltron/patches/7/
+    (fetchurl {
+      name = "gcc-14.patch";
+      url = "https://sourceforge.net/p/gltron/patches/7/attachment/gcc-14.patch";
+      hash = "sha256-OJAUAM/OQVwxYnIacBkncNxMLn/HDCoysbi+Txe+DC8=";
+    })
+  ];
 
   postPatch = ''
     # Fix https://sourceforge.net/p/gltron/bugs/15