diff --git a/install_ticketmachine.lua b/install_ticketmachine.lua
index 513e30a..0012259 100644
--- a/install_ticketmachine.lua
+++ b/install_ticketmachine.lua
@@ -63,20 +63,25 @@ local function httpGet(url)
   end
 end
 
+local function getCacheBustedUrl(url)
+  local sep = url:find("?") and "&" or "?"
+  return url .. sep .. "_t=" .. tostring(os.epoch and os.epoch("utc") or math.random(1, 999999))
+end
+
 term.clear()
 term.setCursorPos(1, 1)
 print("Ticket Machine Installer")
 print("")
 print("Downloading ticket machine program...")
 
-local ok, code = httpGet(URL_MACHINE_HTTP)
+local ok, code = httpGet(getCacheBustedUrl(URL_MACHINE_HTTP))
 
 if not ok or type(code) ~= "string" or #code == 0 then
   print("Download failed: " .. tostring(code or ""))
   return
 end
 
-local okUpdate, updateCode = httpGet(URL_UPDATE_MACHINE)
+local okUpdate, updateCode = httpGet(getCacheBustedUrl(URL_UPDATE_MACHINE))
 if not okUpdate or type(updateCode) ~= "string" or #updateCode == 0 then
   print("Download failed: " .. tostring(updateCode or ""))
   return
diff --git a/installer.lua b/installer.lua
index 021ff86..d93e5d4 100644
--- a/installer.lua
+++ b/installer.lua
@@ -62,9 +62,14 @@ local function httpGet(url)
   end
 end
 
+local function getCacheBustedUrl(url)
+  local sep = url:find("?") and "&" or "?"
+  return url .. sep .. "_t=" .. tostring(os.epoch and os.epoch("utc") or math.random(1, 999999))
+end
+
 local function download(url, path, binary)
   print("Downloading: " .. path)
-  local ok, data = httpGet(url)
+  local ok, data = httpGet(getCacheBustedUrl(url))
   if not ok then
     print("Download failed: " .. tostring(data or ""))
     return false
@@ -103,7 +108,7 @@ end
 if not download(URL_PASS, "pass.dfpwm", true) then return end
 if not download(URL_ERROR, "error.dfpwm", true) then return end
 
-local okGate, gateCode = httpGet(URL_GATE)
+local okGate, gateCode = httpGet(getCacheBustedUrl(URL_GATE))
 if not okGate then
   print("Download failed: startup")
   return
diff --git a/installer_bi.lua b/installer_bi.lua
index 5584933..10c5efd 100644
--- a/installer_bi.lua
+++ b/installer_bi.lua
@@ -69,9 +69,14 @@ local function httpGet(url)
   end
 end
 
+local function getCacheBustedUrl(url)
+  local sep = url:find("?") and "&" or "?"
+  return url .. sep .. "_t=" .. tostring(os.epoch and os.epoch("utc") or math.random(1, 999999))
+end
+
 local function download(url, path, binary)
   print("Downloading: " .. path)
-  local ok, data = httpGet(url)
+  local ok, data = httpGet(getCacheBustedUrl(url))
   if not ok then
     print("Download failed: " .. tostring(data or ""))
     return false
@@ -130,7 +135,7 @@ end
 if not download(URL_PASS, "pass.dfpwm", true) then return end
 if not download(URL_ERROR, "error.dfpwm", true) then return end
 
-local okGate, gateCode = httpGet(URL_GATE)
+local okGate, gateCode = httpGet(getCacheBustedUrl(URL_GATE))
 if not okGate then
   print("Download failed: startup")
   return
diff --git a/installer_refill.lua b/installer_refill.lua
index a263d48..be457c6 100644
--- a/installer_refill.lua
+++ b/installer_refill.lua
@@ -54,19 +54,24 @@ local function httpGet(url)
   end
 end
 
+local function getCacheBustedUrl(url)
+  local sep = url:find("?") and "&" or "?"
+  return url .. sep .. "_t=" .. tostring(os.epoch and os.epoch("utc") or math.random(1, 999999))
+end
+
 term.clear()
 term.setCursorPos(1, 1)
 print("Refill Machine Installer")
 print("")
 print("Downloading refill machine program...")
 
-local ok, code = httpGet(URL_REFILL_MACHINE)
+local ok, code = httpGet(getCacheBustedUrl(URL_REFILL_MACHINE))
 if not ok or type(code) ~= "string" or #code == 0 then
   print("Download failed: " .. tostring(code or ""))
   return
 end
 
-local okUpdate, updateCode = httpGet(URL_UPDATE_REFILL)
+local okUpdate, updateCode = httpGet(getCacheBustedUrl(URL_UPDATE_REFILL))
 if not okUpdate or type(updateCode) ~= "string" or #updateCode == 0 then
   print("Download failed: " .. tostring(updateCode or ""))
   return
diff --git a/update_gate.lua b/update_gate.lua
index ea0d2be..515e85f 100644
--- a/update_gate.lua
+++ b/update_gate.lua
@@ -1,8 +1,14 @@
 
-local URL_GATE = "https://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/gate.lua"
+local URL_GATE = "http://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/gate.lua"
+local URL_UPDATE_GATE = "http://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/update_gate.lua"
 local args = { ... }
 local silent = AUTO_UPDATE_SILENT == true or args[1] == "--silent"
 
+local function getCacheBustedUrl(url)
+  local sep = url:find("?") and "&" or "?"
+  return url .. sep .. "_t=" .. tostring(os.epoch and os.epoch("utc") or math.random(1, 999999))
+end
+
 local function log(msg)
   if not silent then
     print(msg)
@@ -70,7 +76,7 @@ if not silent then
 end
 log("Downloading gate program...")
 
-local ok, code = httpGet(URL_GATE)
+local ok, code = httpGet(getCacheBustedUrl(URL_GATE))
 if not ok or type(code) ~= "string" or #code == 0 then
   error("Download failed: " .. tostring(code or ""))
 end
@@ -81,6 +87,12 @@ end
 atomicWrite("startup", code, false)
 if fs.exists("gate.lua") then atomicWrite("gate.lua", code, false) end
 
+log("Downloading updater program...")
+local okUp, codeUp = httpGet(getCacheBustedUrl(URL_UPDATE_GATE))
+if okUp and type(codeUp) == "string" and #codeUp > 0 then
+  atomicWrite("update_gate.lua", codeUp, false)
+end
+
 if not silent then
   log("")
   log("Done.")
diff --git a/update_machine.lua b/update_machine.lua
index 7e8e0d4..62beaa5 100644
--- a/update_machine.lua
+++ b/update_machine.lua
@@ -1,7 +1,13 @@
-local URL_MACHINE = "https://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/ticketmachine.lua"
+local URL_MACHINE = "http://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/ticketmachine.lua"
+local URL_UPDATE_MACHINE = "http://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/update_machine.lua"
 local args = { ... }
 local silent = AUTO_UPDATE_SILENT == true or args[1] == "--silent"
 
+local function getCacheBustedUrl(url)
+  local sep = url:find("?") and "&" or "?"
+  return url .. sep .. "_t=" .. tostring(os.epoch and os.epoch("utc") or math.random(1, 999999))
+end
+
 local function log(msg)
   if not silent then
     print(msg)
@@ -69,7 +75,7 @@ if not silent then
 end
 log("Downloading ticket machine program...")
 
-local ok, code = httpGet(URL_MACHINE)
+local ok, code = httpGet(getCacheBustedUrl(URL_MACHINE))
 if not ok or type(code) ~= "string" or #code == 0 then
   error("Download failed: " .. tostring(code or ""))
 end
@@ -80,6 +86,12 @@ end
 atomicWrite("startup", code, false)
 if fs.exists("ticketmachine.lua") then atomicWrite("ticketmachine.lua", code, false) end
 
+log("Downloading updater program...")
+local okUp, codeUp = httpGet(getCacheBustedUrl(URL_UPDATE_MACHINE))
+if okUp and type(codeUp) == "string" and #codeUp > 0 then
+  atomicWrite("update_machine.lua", codeUp, false)
+end
+
 if not silent then
   log("")
   log("Done.")
diff --git a/update_refill.lua b/update_refill.lua
index 39bbca7..a47f112 100644
--- a/update_refill.lua
+++ b/update_refill.lua
@@ -1,6 +1,12 @@
 
 
-local URL_REFILL_MACHINE = "https://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/refillmachine.lua"
+local URL_REFILL_MACHINE = "http://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/refillmachine.lua"
+local URL_UPDATE_REFILL = "http://gitea.fse-media.group/Henry_Du/FSE-Ticket.sys/raw/branch/main/update_refill.lua"
+
+local function getCacheBustedUrl(url)
+  local sep = url:find("?") and "&" or "?"
+  return url .. sep .. "_t=" .. tostring(os.epoch and os.epoch("utc") or math.random(1, 999999))
+end
 
 local function writeFile(path, content, binary)
   local mode = binary and "wb" or "w"
@@ -61,12 +67,18 @@ print("Refill Machine Updater")
 print("")
 print("Downloading refill machine program...")
 
-local ok, code = httpGet(URL_REFILL_MACHINE)
+local ok, code = httpGet(getCacheBustedUrl(URL_REFILL_MACHINE))
 if not ok or type(code) ~= "string" or #code == 0 then
   print("Download failed: " .. tostring(code or ""))
   return
 end
 
+print("Downloading updater program...")
+local okUp, codeUp = httpGet(getCacheBustedUrl(URL_UPDATE_REFILL))
+if okUp and type(codeUp) == "string" and #codeUp > 0 then
+  atomicWrite("update_refill.lua", codeUp, false)
+end
+
 if not atomicWrite("startup.lua", code, false) then
   print("Write failed: startup.lua")
   return