diff --git a/Umbraco.RelationEditor.Tests/packages.config b/Umbraco.RelationEditor.Tests/packages.config
index adcdf78..7e39862 100644
--- a/Umbraco.RelationEditor.Tests/packages.config
+++ b/Umbraco.RelationEditor.Tests/packages.config
@@ -32,7 +32,7 @@
   <package id="NUnit" version="2.6.3" targetFramework="net45" />
   <package id="Owin" version="1.0" targetFramework="net45" />
   <package id="semver" version="1.1.2" targetFramework="net45" />
-  <package id="SharpZipLib" version="0.86.0" targetFramework="net45" />
+  <package id="SharpZipLib" version="1.3.3" targetFramework="net45" />
   <package id="UmbracoCms.Core" version="7.4.1" targetFramework="net45" />
   <package id="UrlRewritingNet" version="2.0.7" targetFramework="net45" />
   <package id="xmlrpcnet" version="2.5.0" targetFramework="net45" />