diff --git a/SeaBlock/data-updates/misc.lua b/SeaBlock/data-updates/misc.lua
index ece12b6..3e10b1a 100644
--- a/SeaBlock/data-updates/misc.lua
+++ b/SeaBlock/data-updates/misc.lua
@@ -6,6 +6,8 @@ end
 
 -- No natural gas, use methane for manganese pellet smelting
 seablock.lib.substingredient("pellet-manganese-smelting", "gas-natural-1", "gas-methane")
+bobmods.lib.tech.remove_prerequisite("angels-manganese-smelting-3", "oil-gas-extraction")
+bobmods.lib.tech.add_prerequisite("angels-manganese-smelting-3", "gas-processing")
 
 -- Remove steel's prerequiste on Chemical processing 1
 bobmods.lib.tech.remove_prerequisite("steel-processing", "chemical-processing-1")