diff --git a/extensions/theme-defaults/themes/dark_modern.json b/extensions/theme-defaults/themes/dark_modern.json
index 3a17bc9a32b..d6703a73704 100644
--- a/extensions/theme-defaults/themes/dark_modern.json
+++ b/extensions/theme-defaults/themes/dark_modern.json
@@ -54,6 +54,7 @@
 		"inputOption.activeBorder": "#2488DB",
 		"keybindingLabel.foreground": "#CCCCCC",
 		"menu.background": "#1F1F1F",
+		"menu.selectionBackground": "#0078d4",
 		"notificationCenterHeader.background": "#1F1F1F",
 		"notificationCenterHeader.foreground": "#CCCCCC",
 		"notifications.background": "#1F1F1F",
diff --git a/extensions/theme-defaults/themes/light_modern.json b/extensions/theme-defaults/themes/light_modern.json
index 6114d34d96e..d39d41eee22 100644
--- a/extensions/theme-defaults/themes/light_modern.json
+++ b/extensions/theme-defaults/themes/light_modern.json
@@ -62,6 +62,8 @@
 		"list.hoverBackground": "#F2F2F2",
 		"list.focusAndSelectionOutline": "#005FB8",
 		"menu.border": "#CECECE",
+		"menu.selectionBackground": "#005FB8",
+		"menu.selectionForeground": "#ffffff",
 		"notebook.cellBorderColor": "#E5E5E5",
 		"notebook.selectedCellBackground": "#C8DDF150",
 		"notificationCenterHeader.background": "#FFFFFF",