diff --git a/ioschools/packages.config b/ioschools/packages.config
index 88513f9..f488e3a 100644
--- a/ioschools/packages.config
+++ b/ioschools/packages.config
@@ -22,6 +22,6 @@
   <package id="popper.js" version="1.16.1" targetFramework="net472" />
   <package id="Portable.BouncyCastle" version="1.8.8" targetFramework="net472" />
   <package id="routedebugger" version="2.1.5" targetFramework="net45" />
-  <package id="SharpZipLib" version="1.3.1" targetFramework="net472" />
+  <package id="SharpZipLib" version="1.3.3" targetFramework="net472" />
   <package id="WebGrease" version="1.6.0" targetFramework="net45" />
 </packages>
\ No newline at end of file