diff --git a/pkgs/tools/games/gamemode/default.nix b/pkgs/tools/games/gamemode/default.nix
index 230ccb2ed5f2..25acf8cebb1e 100644
--- a/pkgs/tools/games/gamemode/default.nix
+++ b/pkgs/tools/games/gamemode/default.nix
@@ -34,6 +34,12 @@ stdenv.mkDerivation rec {
     ./preload-nix-workaround.patch
     # Do not install systemd sysusers configuration
     ./no-install-systemd-sysusers.patch
+
+    # fix build with glibc >=2.36 (declaration of pidfd_open)
+    (fetchpatch {
+      url = "https://github.com/FeralInteractive/gamemode/commit/4934191b1928ef695c3e8af21e75781f8591745f.patch";
+      sha256 = "sha256-pWf2NGbd3gEJFwVP/EIJRbTD29V7keTQHy388enktsY=";
+    })
   ];
 
   postPatch = ''