diff --git a/pkgs/data/themes/sierra/default.nix b/pkgs/data/themes/sierra/default.nix
index 96c756e395b0..93983f87f377 100644
--- a/pkgs/data/themes/sierra/default.nix
+++ b/pkgs/data/themes/sierra/default.nix
@@ -32,9 +32,11 @@ stdenv.mkDerivation rec {
   ];
 
   installPhase = ''
+    runHook preInstall
     patchShebangs .
     mkdir -p $out/share/themes
     name= ./install.sh --dest $out/share/themes
+    runHook postInstall
   '';
 
   meta = with lib; {