diff --git a/update.lua b/update.lua
index 74871cb..a65b279 100644
--- a/update.lua
+++ b/update.lua
@@ -1,9 +1,29 @@
-if fs.exists("permset.lua") then
-    fs.delete("permset.lua")
+function update_update()
+    if fs.exists("update.lua.old") then
+        fs.delete("update.lua.old")
+    else
+        if fs.exists("update.lua") then
+            fs.move("update.lua", "update.lua.old")
+        end
+        shell.execute("wget", "https://gitea.rs485.network/ben/cc/raw/branch/main/update.lua", "update.lua")
+        if fs.exists("update.lua.old") and fs.getSize("update.lua.old") ~= fs.getSize("update.lua") then
+            shell.run("update")
+            -- re-ran update, don't continue in this instance
+            return false
+        end
+    end
+    return true
 end
-shell.execute("wget", "https://gitea.rs485.network/ben/cc/raw/branch/main/permset.lua", "permset.lua")
-if fs.exists("test.lua") then
-    fs.delete("test.lua")
+
+
+if update_update() then
+    if fs.exists("permset.lua") then
+        fs.delete("permset.lua")
+    end
+    shell.execute("wget", "https://gitea.rs485.network/ben/cc/raw/branch/main/permset.lua", "permset.lua")
+    if fs.exists("test.lua") then
+        fs.delete("test.lua")
+    end
+    shell.execute("wget", "https://gitea.rs485.network/ben/cc/raw/branch/main/test.lua", "test.lua")
+    shell.run("test")
 end
-shell.execute("wget", "https://gitea.rs485.network/ben/cc/raw/branch/main/test.lua", "test.lua")
-shell.run("test")