diff --git a/XeRelease_Gtkmm4/src/MyWin.cc b/XeRelease_Gtkmm4/src/MyWin.cc
index 53bc003..67c0cfb 100644
--- a/XeRelease_Gtkmm4/src/MyWin.cc
+++ b/XeRelease_Gtkmm4/src/MyWin.cc
@@ -344,7 +344,7 @@ void MyWin::about_dialog()
 {
     char *version, *copyright;
     // The Gtkmm Version
-    version = g_strdup_printf("16.0\nRunning Against Gtkmm %d.%d.%d",
+    version = g_strdup_printf("17.0\nRunning Against Gtkmm %d.%d.%d",
                               GTKMM_MAJOR_VERSION,
                               GTKMM_MINOR_VERSION,
                               GTKMM_MICRO_VERSION);