diff --git a/pkgs/applications/misc/twmn/default.nix b/pkgs/applications/misc/twmn/default.nix
index 06ae708db2bc..c38b97b0e980 100644
--- a/pkgs/applications/misc/twmn/default.nix
+++ b/pkgs/applications/misc/twmn/default.nix
@@ -16,8 +16,12 @@ stdenv.mkDerivation rec {
   '';
 
   installPhase = ''
+    runHook preInstall
+
     mkdir -p "$out/bin"
     cp bin/* "$out/bin"
+
+    runHook postInstall
   '';
 
   meta = {