diff --git a/projects/updater/update.lua b/projects/updater/update.lua
index f09c2b1..fdafeca 100644
--- a/projects/updater/update.lua
+++ b/projects/updater/update.lua
@@ -69,7 +69,10 @@ local function getAllFiles(program)
 
     print("#DEBUG currentFiles " .. currentFiles)
 
-    local updateResult = http.post(updateUrl, currentFiles)
+    local updateResult = http.post(updateUrl, currentFiles, {
+      ["Content-Type"] = "text/plain",
+      ["Content-Length"] = #currentFiles
+    })
     if updateResult == nil then
         print("error! getting updates for " .. program)
         error()