diff --git a/src/simulator/crates/mc-combat/src/resolver.rs b/src/simulator/crates/mc-combat/src/resolver.rs
index 6ff88ec7..6e12d9d6 100644
--- a/src/simulator/crates/mc-combat/src/resolver.rs
+++ b/src/simulator/crates/mc-combat/src/resolver.rs
@@ -406,10 +406,10 @@ impl CombatResolver {
                 // Melee vs city: only a fraction of unit damage translates to
                 // city structural HP. Siege units are the intended counter to
                 // walls (via Siege combat_type which applies siege_city_bonus).
-                // 0.37 is the narrow sweet spot — 0.40 let seed 1 fall T76,
-                // 0.33 stalled all 3 seeds at max_turns. 0.37 should stretch
-                // seed 1 while keeping seed 2 decidable.
-                let melee_city_fraction: f32 = 0.37;
+                // 0.39 is the narrow sweet spot — 0.40 let seed 1 fall T76,
+                // 0.37 stalled all 3 seeds at max_turns. 0.39 should stretch
+                // seed 1 toward T150+ while keeping games decidable.
+                let melee_city_fraction: f32 = 0.39;
                 let city_dmg = (damage_to_defender as f32 * melee_city_fraction).round() as i32;
                 (city_dmg, (city_hp - city_dmg).max(0))
             }