diff --git a/src/TestSite/packages.config b/src/TestSite/packages.config
index 4b1d05e..b865b8e 100644
--- a/src/TestSite/packages.config
+++ b/src/TestSite/packages.config
@@ -35,7 +35,7 @@
   <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net452" />
   <package id="Owin" version="1.0" targetFramework="net452" />
   <package id="semver" version="1.1.2" targetFramework="net452" />
-  <package id="SharpZipLib" version="0.86.0" targetFramework="net452" />
+  <package id="SharpZipLib" version="1.3.3" targetFramework="net452" />
   <package id="System.Collections.Immutable" version="1.1.36" targetFramework="net452" />
   <package id="System.Reflection.Metadata" version="1.0.21" targetFramework="net452" />
   <package id="Umbraco.ModelsBuilder" version="3.0.0" targetFramework="net452" />