diff --git a/pkgs/by-name/gt/gtkmm4/package.nix b/pkgs/by-name/gt/gtkmm4/package.nix
index dde0fe3485ba..ba33d17e7c1c 100644
--- a/pkgs/by-name/gt/gtkmm4/package.nix
+++ b/pkgs/by-name/gt/gtkmm4/package.nix
@@ -19,7 +19,7 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "gtkmm";
-  version = "4.20.0";
+  version = "4.22.0";
 
   outputs = [
     "out"
@@ -28,7 +28,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   src = fetchurl {
     url = "mirror://gnome/sources/gtkmm/${lib.versions.majorMinor finalAttrs.version}/gtkmm-${finalAttrs.version}.tar.xz";
-    hash = "sha256-2q2b+bcPkJdfkXgfx6ZWySOpE3QmH1dsiDzTrr1ZyDM=";
+    hash = "sha256-LoohtLByX2IOM6ruDNND7RIbUzJ1tjKJZhmxyJ6W3mc=";
   };
 
   nativeBuildInputs = [