diff --git a/WebBlocks/WebBlocks.SandboxV7/packages.config b/WebBlocks/WebBlocks.SandboxV7/packages.config
index 5e23ba47..fd1cb721 100644
--- a/WebBlocks/WebBlocks.SandboxV7/packages.config
+++ b/WebBlocks/WebBlocks.SandboxV7/packages.config
@@ -39,7 +39,7 @@
   <package id="Newtonsoft.Json" version="6.0.8" 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" version="7.3.0" targetFramework="net45" />
   <package id="UmbracoCms.Core" version="7.3.0" targetFramework="net45" />
   <package id="xmlrpcnet" version="2.5.0" targetFramework="net45" />