diff --git a/extensions/theme-defaults/themes/dark_plus_experimental.json b/extensions/theme-defaults/themes/dark_plus_experimental.json
index 5a00e7525b2..26d9b3836a5 100644
--- a/extensions/theme-defaults/themes/dark_plus_experimental.json
+++ b/extensions/theme-defaults/themes/dark_plus_experimental.json
@@ -123,6 +123,7 @@
 		"tab.unfocusedActiveBorderTop": "#ffffff15",
 		"tab.unfocusedHoverBackground": "#6e76811a",
 		"terminal.foreground": "#ffffffc5",
+		"terminal.tab.activeBorder": "#2488d8",
 		"textBlockQuote.background": "#010409",
 		"textBlockQuote.border": "#ffffff14",
 		"textCodeBlock.background": "#6e768166",
diff --git a/extensions/theme-defaults/themes/light_plus_experimental.json b/extensions/theme-defaults/themes/light_plus_experimental.json
index f160599490d..a387e5c9882 100644
--- a/extensions/theme-defaults/themes/light_plus_experimental.json
+++ b/extensions/theme-defaults/themes/light_plus_experimental.json
@@ -137,6 +137,7 @@
 		"tab.unfocusedHoverBackground": "#6e76811a",
 		"terminal.foreground": "#ffffffc5",
 		"terminal.inactiveSelectionBackground": "#E5EBF1",
+		"terminal.tab.activeBorder": "#005fb8",
 		"textBlockQuote.background": "#f8f8f8",
 		"textBlockQuote.border": "#0000001a",
 		"textCodeBlock.background": "#6e768166",