diff --git a/mkClojureLib.nix b/mkClojureLib.nix
index 748b429..a74576c 100644
--- a/mkClojureLib.nix
+++ b/mkClojureLib.nix
@@ -21,11 +21,6 @@ let
   deps = callPackage clj-deps { };
   classpath = deps.makeClasspaths { };
 
-  uberjar-script = writeScript "uberjar-builder.rb" ''
-    ${ruby}/bin/ruby
-    ${readFile ./resources/uberjar-builder.rb}
-  '';
-
   full-name = "${group}-${name}-${version}-standalone.jar";
 
   target = "$TEMP/target";
@@ -35,8 +30,8 @@ in stdenv.mkDerivation {
 
   src = src;
 
-  nativeBuildInputs = [ jre ];
-  buildInputs = [ build-tools-jar ] ++ (map (x: x.paths) deps.packages);
+  nativeBuildInputs = [ jre clojure ];
+  buildInputs = (map (x: x.paths) deps.packages);
 
   buildPhase = ''
     HOME=$TEMP/home