diff --git a/src/leiningen/classpath.clj b/src/leiningen/classpath.clj
index 3be7e1f..836740e 100644
--- a/src/leiningen/classpath.clj
+++ b/src/leiningen/classpath.clj
@@ -8,7 +8,9 @@
   "Returns a seq of Files for all the jars in the project's library directory."
   [project]
   (filter #(.endsWith (.getName %) ".jar")
-          (file-seq (file (:library-path project)))))
+          (concat
+           (file-seq (file (:library-path project)))
+           (file-seq (file (str (:root project) "/lib/dev"))))))

 (defn make-path
   "Constructs an ant Path object from Files and strings."