diff --git a/DataMasker.Main/packages.config b/DataMasker.Main/packages.config
index 095732a..50f6315 100644
--- a/DataMasker.Main/packages.config
+++ b/DataMasker.Main/packages.config
@@ -11,7 +11,7 @@
   <package id="GeoAPI.CoordinateSystems" version="1.7.5" targetFramework="net461" />
   <package id="GeoAPI.Core" version="1.7.5" targetFramework="net461" />
   <package id="Goblinfactory.Konsole" version="3.3.0" targetFramework="net461" />
-  <package id="Google.Protobuf" version="3.6.1" targetFramework="net461" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net461" />
   <package id="Microsoft.CSharp" version="4.6.0" targetFramework="net461" />
   <package id="Microsoft.Extensions.Configuration" version="2.2.0" targetFramework="net461" />
   <package id="Microsoft.Extensions.Configuration.Abstractions" version="2.2.0" targetFramework="net461" />