diff --git a/.gitignore b/.gitignore
index d9c846e..88fa3ca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 /classes
 /checkouts
 pom.xml
+pom.xml.asc
 *.jar
 *.class
 .lein-repl-history
diff --git a/project.clj b/project.clj
index 36fcc54..e6dd5ff 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject rhizome "0.2.3"
+(defproject rhizome "0.2.4-SNAPSHOT"
   :description "a simple way to visualize graphs"
   :license {:name "MIT License"
             :url "http://opensource.org/licenses/MIT"}
diff --git a/src/rhizome/viz.clj b/src/rhizome/viz.clj
index d7384fb..f3cdd9b 100644
--- a/src/rhizome/viz.clj
+++ b/src/rhizome/viz.clj
@@ -34,7 +34,7 @@
 
 (defn create-frame
   "Creates a frame for viewing graphviz images.  Only useful if you don't want to use the default frame."
-  [{:keys [name close-promise]}]
+  [{:keys [name close-promise dispose-on-close?]}]
   (delay
     (let [frame (JFrame. ^String name)
           image-icon (ImageIcon.)
@@ -52,6 +52,8 @@
           (proxy [WindowAdapter] []
             (windowClosing [e]
               (.setVisible frame false)
+              (when dispose-on-close?
+                (.dispose frame))
               (when close-promise
                 (deliver close-promise true)))))
         (.setContentPane pane)