diff --git a/pkgs/desktops/gnome/core/mutter/default.nix b/pkgs/desktops/gnome/core/mutter/default.nix
index e5d1cda681db..8722c95f2386 100644
--- a/pkgs/desktops/gnome/core/mutter/default.nix
+++ b/pkgs/desktops/gnome/core/mutter/default.nix
@@ -67,13 +67,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "mutter";
-  version = "45.4";
+  version = "45.5";
 
   outputs = [ "out" "dev" "man" "devdoc" ];
 
   src = fetchurl {
     url = "mirror://gnome/sources/mutter/${lib.versions.major finalAttrs.version}/mutter-${finalAttrs.version}.tar.xz";
-    sha256 = "kRQIN74VWC8sdTvmYauOQtrVXUobDwZQvQssk/Ar16s=";
+    sha256 = "sha256-UcMyS4qXX5luWsaTqzhWPElubxQubNM1e0lQ0lAzSHQ=";
   };
 
   mesonFlags = [