diff --git a/ExcelMerge/packages.config b/ExcelMerge/packages.config
index f87cbaa..2e08fe3 100644
--- a/ExcelMerge/packages.config
+++ b/ExcelMerge/packages.config
@@ -2,6 +2,6 @@
 <packages>
   <package id="Diff4Net" version="1.1.2" targetFramework="net452" />
   <package id="NPOI" version="2.3.0" targetFramework="net452" />
-  <package id="SharpZipLib" version="0.86.0" targetFramework="net452" />
+  <package id="SharpZipLib" version="1.3.3" targetFramework="net452" />
   <package id="SKCore" version="1.0.1" targetFramework="net452" />
 </packages>
\ No newline at end of file