diff --git a/pkgs/applications/audio/guitarix/default.nix b/pkgs/applications/audio/guitarix/default.nix
index ec8ba7a1d1808d..f90cae115b4e98 100644
--- a/pkgs/applications/audio/guitarix/default.nix
+++ b/pkgs/applications/audio/guitarix/default.nix
@@ -1,5 +1,6 @@
 { lib, stdenv
 , fetchurl
+, fetchpatch
 , avahi
 , bluez
 , boost
@@ -41,13 +42,22 @@ in
 
 stdenv.mkDerivation rec {
   pname = "guitarix";
-  version = "0.41.0";
+  version = "0.42.1";
 
   src = fetchurl {
     url = "mirror://sourceforge/guitarix/guitarix2-${version}.tar.xz";
-    sha256 = "0qsfbyrrpb3bbdyq68k28mjql7kglxh8nqcw9jvja28x6x9ik5a0";
+    sha256 = "101c2hdpipj3s6rmva5wf3q9hfjv7bkyzi7s8sgaiys8f7h4czkr";
   };
 
+  patches = [
+    (fetchpatch {
+      name = "guitarix-gcc11.patch";
+      url = "https://github.com/brummer10/guitarix/commit/d8f003484c57d808682025dfb07a7a1fb848afdc.patch";
+      stripLen = 1;
+      sha256 = "1qhlbf18cn6m9jdz3741nrdfqvznjna3daqmn9l10k5nd3asy4il";
+    })
+  ];
+
   nativeBuildInputs = [
     gettext
     hicolor-icon-theme