diff --git a/data/upgrade/hub_upgrade_1.json b/data/upgrade/hub_upgrade_1.json
new file mode 100644
index 0000000..65ea11f
--- /dev/null
+++ b/data/upgrade/hub_upgrade_1.json
@@ -0,0 +1,5 @@
+{
+  "input": { "iron_rod":  10 },
+  "time": 0,
+  "requires": null
+}
\ No newline at end of file
diff --git a/data/upgrade/hub_upgrade_2.json b/data/upgrade/hub_upgrade_2.json
new file mode 100644
index 0000000..62b986b
--- /dev/null
+++ b/data/upgrade/hub_upgrade_2.json
@@ -0,0 +1,5 @@
+{
+  "input": { "iron_plate": 10, "iron_rod": 10, "wire": 50 },
+  "time": 0,
+  "requires": "hub_upgrade_1"
+}
diff --git a/data/upgrade/hub_upgrade_3.json b/data/upgrade/hub_upgrade_3.json
new file mode 100644
index 0000000..04ece51
--- /dev/null
+++ b/data/upgrade/hub_upgrade_3.json
@@ -0,0 +1,5 @@
+{
+  "input": { "iron_plate": 70, "cable": 10, "wire": 50 },
+  "time": 0,
+  "requires": "hub_upgrade_2"
+}