diff --git a/aosp/update_attempter_android.cc b/aosp/update_attempter_android.cc
index b5ec1e0..909ce59 100644
--- a/aosp/update_attempter_android.cc
+++ b/aosp/update_attempter_android.cc
@@ -381,11 +381,26 @@
 #endif  // _UE_SIDELOAD
   }
   // Setup extra headers.
-  if (!headers[kPayloadPropertyAuthorization].empty())
+  if (!headers[kPayloadPropertyAuthorization].empty()) {
     fetcher->SetHeader("Authorization", headers[kPayloadPropertyAuthorization]);
-  if (!headers[kPayloadPropertyUserAgent].empty())
+  }
+  if (!headers[kPayloadPropertyUserAgent].empty()) {
     fetcher->SetHeader("User-Agent", headers[kPayloadPropertyUserAgent]);
-
+  }
+  if (!headers[kPayloadPropertyHTTPExtras].empty()) {
+    auto entries =
+        android::base::Split(headers[kPayloadPropertyHTTPExtras], " ");
+    for (auto& entry : entries) {
+      auto parts = android::base::Split(entry, ":");
+      if (parts.size() != 2) {
+        LOG(ERROR)
+            << "HTTP headers are not in expected format. "
+               "headers[kPayloadPropertyHTTPExtras] = key1:val1 key2:val2";
+        continue;
+      }
+      fetcher->SetHeader(parts[0], parts[1]);
+    }
+  }
   if (!headers[kPayloadPropertyNetworkProxy].empty()) {
     LOG(INFO) << "Using proxy url from payload headers: "
               << headers[kPayloadPropertyNetworkProxy];