diff --git a/Experiment/Experiment1/MyQrCode/MyQrCode/packages.config b/Experiment/Experiment1/MyQrCode/MyQrCode/packages.config
index c05bd50..a9a3662 100644
--- a/Experiment/Experiment1/MyQrCode/MyQrCode/packages.config
+++ b/Experiment/Experiment1/MyQrCode/MyQrCode/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Protobuf" version="3.5.1" targetFramework="net461" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net461" />
   <package id="MySql.Data" version="8.0.15" targetFramework="net461" />
   <package id="QrCode.Net" version="0.4.0.0" targetFramework="net461" />
 </packages>
\ No newline at end of file