diff --git a/src/AppHarbor/packages.config b/src/AppHarbor/packages.config
index c61f1a7..03b1f93 100644
--- a/src/AppHarbor/packages.config
+++ b/src/AppHarbor/packages.config
@@ -6,5 +6,5 @@
   <package id="Castle.Windsor" version="3.0.0.4001" />
   <package id="NDesk.Options" version="0.2.1" />
   <package id="RestSharp" version="103.1" />
-  <package id="SharpZipLib" version="0.86.0" />
+  <package id="SharpZipLib" version="1.3.3" />
 </packages>
\ No newline at end of file