diff --git a/src/post_code.cpp b/src/post_code.cpp
index 8ab2e32..327e29e 100644
--- a/src/post_code.cpp
+++ b/src/post_code.cpp
@@ -24,6 +24,8 @@
 
 #include <iomanip>
 
+const static constexpr auto timeoutMicroSeconds = 1000000;
+
 void PostCode::deleteAll()
 {
     std::uintmax_t n = fs::remove_all(postCodeListPath);
@@ -72,6 +74,12 @@
 
 void PostCode::savePostCodes(postcode_t code)
 {
+    if (!timer)
+    {
+        timer = std::make_unique<phosphor::Timer>(
+            event.get(), [this]() { serialize(postCodeListPath); });
+    }
+
     // steady_clock is a monotonic clock that is guaranteed to never be adjusted
     auto postCodeTimeSteady = std::chrono::steady_clock::now();
     uint64_t tsUS = std::chrono::duration_cast<std::chrono::microseconds>(
@@ -98,7 +106,11 @@
     {
         postCodes.erase(postCodes.begin());
     }
-    serialize(postCodeListPath);
+
+    if (!timer->isRunning())
+    {
+        timer->start(std::chrono::microseconds(timeoutMicroSeconds));
+    }
 
 #ifdef ENABLE_BIOS_POST_CODE_LOG
     uint64_t usTimeOffset = tsUS - firstPostCodeUsSinceEpoch;