diff --git a/lignumis/prototypes/integrations/vanilla.lua b/lignumis/prototypes/integrations/vanilla.lua
index 29fe4db..45dde80 100644
--- a/lignumis/prototypes/integrations/vanilla.lua
+++ b/lignumis/prototypes/integrations/vanilla.lua
@@ -208,6 +208,7 @@ robots_speed_technology_2.unit = {
     ingredients = { { "automation-science-pack", 1 }, { "logistic-science-pack", 1 } },
     time = 30
 }
+robots_speed_technology_2.upgrade = false
 
 local robots_speed_technology_3 = data.raw.technology["worker-robots-speed-3"]
 robots_speed_technology_3.prerequisites = { "robotics", "chemical-science-pack" }
@@ -243,6 +244,7 @@ weapon_speed_technology_1.unit.ingredients = table.deepcopy(physical_damage_tech
 local physical_damage_technology_2 = data.raw.technology["physical-projectile-damage-2"]
 physical_damage_technology_2.prerequisites = { "physical-projectile-damage-1", "steam-science-pack" }
 physical_damage_technology_2.unit.ingredients = { { "wood-science-pack", 1 }, { "steam-science-pack", 1 } }
+physical_damage_technology_2.upgrade = false
 table.insert(physical_damage_technology_2.effects, {
     type = "turret-attack",
     turret_id = "basic-gun-turret",
@@ -252,6 +254,7 @@ table.insert(physical_damage_technology_2.effects, {
 local weapon_speed_technology_2 = data.raw.technology["weapon-shooting-speed-2"]
 weapon_speed_technology_2.prerequisites = { "weapon-shooting-speed-1", "steam-science-pack" }
 weapon_speed_technology_2.unit.ingredients = table.deepcopy(physical_damage_technology_2.unit.ingredients)
+weapon_speed_technology_2.upgrade = false
 
 local physical_damage_technology_3 = data.raw.technology["physical-projectile-damage-3"]
 physical_damage_technology_3.prerequisites = { "military-2", "logistic-science-pack" }