diff --git a/pkgs/development/lisp-modules/packages.nix b/pkgs/development/lisp-modules/packages.nix
index 76e094e34a26..6df99a60fa16 100644
--- a/pkgs/development/lisp-modules/packages.nix
+++ b/pkgs/development/lisp-modules/packages.nix
@@ -546,15 +546,6 @@ let
     '';
   });
 
-  ltk = super.ltk.overrideLispAttrs (o: {
-    src = pkgs.fetchzip {
-      url = "https://github.com/uthar/ltk/archive/f19162e76d6c7c2f51bd289b811d9ba20dd6555e.tar.gz";
-      sha256 = "0mzikv4abq9yqlj6dsji1wh34mjizr5prv6mvzzj29z1485fh1bj";
-    };
-    version = "f19162e76";
-  });
-
-
   magicl = build-with-compile-into-pwd {
     inherit (super.magicl) pname version src lispLibs;
     nativeBuildInputs = [ pkgs.gfortran ];