diff --git a/Sources/SymbolSource.Processing.Basic/packages.config b/Sources/SymbolSource.Processing.Basic/packages.config
index a2b1d91..dee0968 100644
--- a/Sources/SymbolSource.Processing.Basic/packages.config
+++ b/Sources/SymbolSource.Processing.Basic/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="Castle.Core" version="3.1.0" targetFramework="net40" />
   <package id="Castle.Windsor" version="3.1.0" targetFramework="net40" />
-  <package id="DotNetZip" version="1.9.1.8" />
+  <package id="DotNetZip" version="1.11.0" />
   <package id="log4net" version="1.2.10" allowedVersions="[1.2.10] " />
   <package id="Mono.Cecil" version="0.9.5.1" />
   <package id="SymbolSource.Microsoft.Cci.Metadata" version="1.0.65055.0" />