diff --git a/android/assets/jsons/Civ V - Vanilla/Units.json b/android/assets/jsons/Civ V - Vanilla/Units.json
index 129a3e452f..63b868b6e0 100644
--- a/android/assets/jsons/Civ V - Vanilla/Units.json	
+++ b/android/assets/jsons/Civ V - Vanilla/Units.json	
@@ -552,6 +552,7 @@
 		"strength": 20,
 		"cost": 120,
 		"requiredTech": "Chivalry",
+		"obsoleteTech": "Military Science",
 		"upgradesTo": "Cavalry",
 		"requiredResource": "Horses",
 		"uniques": ["Can move after attacking","No defensive terrain bonus","Penalty vs City 33%" ],
@@ -617,6 +618,7 @@
 		"strength": 20,
 		"cost": 110,
 		"requiredTech": "Chivalry",
+		"obsoleteTech": "Military Science",
 		"requiredResource": "Horses",
 		"upgradesTo": "Cavalry",
 		"obsoleteTech": "Military Science",