diff --git a/pkgs/development/libraries/gtkmm/4.x.nix b/pkgs/development/libraries/gtkmm/4.x.nix
index 423d27a437e..e1ed8307a39 100644
--- a/pkgs/development/libraries/gtkmm/4.x.nix
+++ b/pkgs/development/libraries/gtkmm/4.x.nix
@@ -17,13 +17,13 @@
 
 stdenv.mkDerivation rec {
   pname = "gtkmm";
-  version = "4.9.3";
+  version = "4.10.0";
 
   outputs = [ "out" "dev" ];
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "uGCyNIIqAwHDCQHHHx3/364fX5skBNDafdtd7WG19L4=";
+    sha256 = "4bEJdxVX7MU8upFagLbt6Cf/29AEnGL9+L1/p5r8xus=";
   };
 
   nativeBuildInputs = [