diff --git a/GpCommon/GpBuildVersion.h b/GpCommon/GpBuildVersion.h
index 6a4058e..8fc52a4 100644
--- a/GpCommon/GpBuildVersion.h
+++ b/GpCommon/GpBuildVersion.h
@@ -5,5 +5,5 @@
 #define GP_BUILD_VERSION_UPDATE 4
 
 #define GP_APPLICATION_VERSION_STRING "1.0.4"
-#define GP_APPLICATION_COPYRIGHT_STRING "2020 Eric Lasota"
+#define GP_APPLICATION_COPYRIGHT_STRING "2019-2020 Eric Lasota"
 #define GP_APPLICATION_WEBSITE_STRING "https://github.com/elasota/Aerofoil"