Lein can't find ANT

gistfile1.txt

Exception in thread "main" The following error occurred while executing this line:
java.io.FileNotFoundException: /home/duck/Dropbox/projects/jiksnu/lib/dev/ant-1.8.2.jar (No such file or directory) (NO_SOURCE_FILE:0)
        at clojure.lang.Compiler.eval(Compiler.java:5440)
        at clojure.lang.Compiler.eval(Compiler.java:5391)
        at clojure.core$eval.invoke(core.clj:2382)
        at clojure.main$eval_opt.invoke(main.clj:235)
        at clojure.main$initialize.invoke(main.clj:254)
        at clojure.main$script_opt.invoke(main.clj:270)
        at clojure.main$main.doInvoke(main.clj:354)
        at clojure.lang.RestFn.invoke(RestFn.java:458)
        at clojure.lang.Var.invoke(Var.java:377)  
        at clojure.lang.AFn.applyToHelper(AFn.java:174)
        at clojure.lang.Var.applyTo(Var.java:482) 
        at clojure.main.main(main.java:37)
Caused by: The following error occurred while executing this line:
java.io.FileNotFoundException: /home/duck/Dropbox/projects/jiksnu/lib/dev/ant-1.8.2.jar (No such file or directory)
        at org.apache.tools.ant.ProjectHelper.addLocationToBuildException(ProjectHelper.java:551)
        at org.apache.tools.ant.taskdefs.Definer.loadAntlib(Definer.java:445)
        at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:292)
        at org.apache.tools.ant.ComponentHelper.checkNamespace(ComponentHelper.java:869)
        at org.apache.tools.ant.ComponentHelper.getDefinition(ComponentHelper.java:308)
        at org.apache.tools.ant.ComponentHelper.getComponentClass(ComponentHelper.java:298)
        at org.apache.tools.ant.ComponentHelper.createNewTask(ComponentHelper.java:547)
        at org.apache.tools.ant.ComponentHelper.createTask(ComponentHelper.java:524)
        at org.apache.tools.ant.Project.createTask(Project.java:1179)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:90)
        at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28)
        at lancet.core$instantiate_task.doInvoke(core.clj:82)
        at clojure.lang.RestFn.applyTo(RestFn.java:147)
        at clojure.core$apply.invoke(core.clj:544)
        at lancet.core$copy.doInvoke(core.clj:153)
        at clojure.lang.RestFn.invoke(RestFn.java:422)
        at leiningen.deps$fn__2235.invoke(deps.clj:68)
        at clojure.lang.MultiFn.invoke(MultiFn.java:175)
        at leiningen.deps$do_deps.invoke(deps.clj:143)
        at leiningen.deps$deps.doInvoke(deps.clj:195)
        at clojure.lang.RestFn.invoke(RestFn.java:411)
        at leiningen.test_BANG_$test_BANG_.doInvoke(test!.clj:11)
        at clojure.lang.RestFn.invoke(RestFn.java:411)
        at clojure.lang.Var.invoke(Var.java:365)
        at clojure.lang.AFn.applyToHelper(AFn.java:163)
        at clojure.lang.Var.applyTo(Var.java:482)
        at clojure.core$apply.invoke(core.clj:542)
        at leiningen.core$apply_task.invoke(core.clj:228)
        at leiningen.core$_main.doInvoke(core.clj:294)
        at clojure.lang.RestFn.invoke(RestFn.java:411)
        at clojure.lang.AFn.applyToHelper(AFn.java:163)
        at clojure.lang.RestFn.applyTo(RestFn.java:133)
        at clojure.core$apply.invoke(core.clj:542)
        at leiningen.core$_main.invoke(core.clj:297)
        at user$eval42.invoke(NO_SOURCE_FILE:1)