diff --git a/ChangeLog b/ChangeLog
index ea6e3c83f..a5507cfe0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,8 @@
 - TW-1313 some recurring intervals reset due time to midnight
           (thanks to James Dietrich).
 - TW-1425 The 'age' format rounds in odd ways (thanks to Black Ops testing).
+- TW-1435 Ability to sync the full history of tasks including completed ones
+          (thanks to Renato Alves).
 - TW-1446 Difference in how relative dates are specified in report filters since 2.3.0
           (thanks to atomicules).
 - TW-1481 Unable to assign a completed task as dependency (thanks to Tomas
diff --git a/src/commands/CmdSync.cpp b/src/commands/CmdSync.cpp
index 361729723..0001fa3ab 100644
--- a/src/commands/CmdSync.cpp
+++ b/src/commands/CmdSync.cpp
@@ -125,8 +125,8 @@ int CmdSync::execute (std::string& output)
   if (! key.exists ())
     throw std::string (STRING_CMD_SYNC_BAD_KEY);
 
-  // If this is a first-time initialization, send pending.data, not
-  // backlog.data.
+  // If this is a first-time initialization, send pending.data and
+  // completed.data, but not backlog.data.
   std::string payload = "";
   int upload_count = 0;
   if (first_time_init)
@@ -135,8 +135,8 @@ int CmdSync::execute (std::string& output)
     // deltas is meaningless.
     context.tdb2.backlog._file.truncate ();
 
-    auto pending = context.tdb2.pending.get_tasks ();
-    for (auto& i : pending)
+    auto all_tasks = context.tdb2.all_tasks ();
+    for (auto& i : all_tasks)
     {
       payload += i.composeJSON () + "\n";
       ++upload_count;
@@ -162,6 +162,11 @@ int CmdSync::execute (std::string& output)
   request.set ("user",     credentials[1]);
   request.set ("key",      credentials[2]);
 
+  // Tell the server that this is a full upload, allowing it to perhaps compact
+  // its data.
+  if (first_time_init)
+    request.set ("subtype", "init");
+
   request.setPayload (payload);
 
   if (context.verbose ("sync"))