diff --git a/mods/ra/rules/misc.yaml b/mods/ra/rules/misc.yaml
index 7f425f469f..2dd34bf0fe 100644
--- a/mods/ra/rules/misc.yaml
+++ b/mods/ra/rules/misc.yaml
@@ -147,6 +147,12 @@ CRATE:
 		Units: e1,e1,e4,e4,e3,e3,e3
 		ValidRaces: soviet
 		TimeDelay: 4500
+	UnitUpgradeCrateAction@invuln:
+		SelectionShares: 5
+		Effect: invuln
+		Notification: ironcur9.aud
+		Upgrades: invulnerability
+		Duration: 600
 	RenderSprites:
 		Palette: effect
 	WithCrateBody: