diff --git a/DataClassification/DataClassification/packages.config b/DataClassification/DataClassification/packages.config
index 0e4f5d6..838500c 100644
--- a/DataClassification/DataClassification/packages.config
+++ b/DataClassification/DataClassification/packages.config
@@ -9,7 +9,7 @@
   <package id="ExcelDataReader.DataSet" version="3.6.0" targetFramework="net461" />
   <package id="ExcelNumberFormat" version="1.0.3" targetFramework="net461" />
   <package id="FastMember" version="1.3.0" targetFramework="net461" />
-  <package id="Google.Protobuf" version="3.6.1" targetFramework="net461" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net461" />
   <package id="Lorem.NET" version="1.0.6" targetFramework="net461" />
   <package id="Microsoft.Bcl.AsyncInterfaces" version="1.0.0" targetFramework="net461" />
   <package id="MySql.Data" version="8.0.18" targetFramework="net461" />