diff --git a/StockMonitor/GUI/packages.config b/StockMonitor/GUI/packages.config
index a98b2e5..c429c58 100644
--- a/StockMonitor/GUI/packages.config
+++ b/StockMonitor/GUI/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="BouncyCastle" version="1.8.6.1" targetFramework="net48" />
   <package id="EntityFramework" version="6.4.0" targetFramework="net48" />
-  <package id="Google.Protobuf" version="3.11.4" targetFramework="net48" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net48" />
   <package id="LiveCharts" version="0.9.7" targetFramework="net48" />
   <package id="LiveCharts.Wpf" version="0.9.7" targetFramework="net48" />
   <package id="MaterialDesignColors" version="1.2.3" targetFramework="net48" />