diff --git a/Refactored.UmbracoEmailExtensions/packages.config b/Refactored.UmbracoEmailExtensions/packages.config
index 0cdf8ad..85846ab 100644
--- a/Refactored.UmbracoEmailExtensions/packages.config
+++ b/Refactored.UmbracoEmailExtensions/packages.config
@@ -36,7 +36,7 @@
   <package id="Refactored.Email" version="2.1.3.0" targetFramework="net452" />
   <package id="semver" version="1.1.2" targetFramework="net452" />
   <package id="ServiceStack.Text" version="3.9.35" targetFramework="net40" />
-  <package id="SharpZipLib" version="0.86.0" targetFramework="net452" />
+  <package id="SharpZipLib" version="1.3.3" targetFramework="net452" />
   <package id="System.Threading.Tasks.Dataflow" version="4.7.0" targetFramework="net452" />
   <package id="UmbracoCms.Core" version="7.7.0" targetFramework="net452" />
   <package id="xmlrpcnet" version="2.5.0" targetFramework="net452" />