diff --git a/NPOITest/packages.config b/NPOITest/packages.config
index ffcc8bc..7e8cb29 100644
--- a/NPOITest/packages.config
+++ b/NPOITest/packages.config
@@ -2,5 +2,5 @@
 <packages>
   <package id="NPOI" version="2.5.1" targetFramework="net472" />
   <package id="Portable.BouncyCastle" version="1.8.6" targetFramework="net472" />
-  <package id="SharpZipLib" version="1.2.0" targetFramework="net472" />
+  <package id="SharpZipLib" version="1.3.3" targetFramework="net472" />
 </packages>
\ No newline at end of file