diff --git a/pkgs/development/libraries/kde-frameworks/breeze-icons.nix b/pkgs/development/libraries/kde-frameworks/breeze-icons.nix
index 9e4a40b22aba..c8382ed3408b 100644
--- a/pkgs/development/libraries/kde-frameworks/breeze-icons.nix
+++ b/pkgs/development/libraries/kde-frameworks/breeze-icons.nix
@@ -1,9 +1,13 @@
-{ mkDerivation, lib, extra-cmake-modules, qtsvg }:
+{ mkDerivation, lib, extra-cmake-modules, gtk3, qtsvg }:
 
 mkDerivation {
   name = "breeze-icons";
   meta = { maintainers = [ lib.maintainers.ttuegel ]; };
-  nativeBuildInputs = [ extra-cmake-modules ];
+  nativeBuildInputs = [ extra-cmake-modules gtk3 ];
   buildInputs = [ qtsvg ];
   outputs = [ "out" ]; # only runtime outputs
+  postInstall = ''
+    gtk-update-icon-cache "''${out:?}/share/icons/breeze"
+    gtk-update-icon-cache "''${out:?}/share/icons/breeze-dark"
+  '';
 }