diff --git a/extensions/theme-defaults/themes/light_vs.json b/extensions/theme-defaults/themes/light_vs.json
index 50a315348f7..e4cc701f82c 100644
--- a/extensions/theme-defaults/themes/light_vs.json
+++ b/extensions/theme-defaults/themes/light_vs.json
@@ -24,6 +24,7 @@
 		"sideBarSectionHeader.background": "#0000",
 		"sideBarSectionHeader.border": "#61616130",
 		"tab.selectedForeground": "#333333b3",
+		"tab.selectedBackground": "#ffffffa5",
 		"tab.lastPinnedBorder": "#61616130",
 		"notebook.cellBorderColor": "#E8E8E8",
 		"notebook.selectedCellBackground": "#c8ddf150",