diff --git a/docs/rpc-spec.md b/docs/rpc-spec.md
index 0f6829be4..7be3d7212 100644
--- a/docs/rpc-spec.md
+++ b/docs/rpc-spec.md
@@ -386,6 +386,7 @@ Files are returned in the order they are laid out in the torrent. References to
 | `announce`                | string     | tr_tracker_view
 | `announceState`           | number     | tr_tracker_view
 | `downloadCount`           | number     | tr_tracker_view
+| `downloader_count`        | number     | tr_tracker_view
 | `hasAnnounced`            | boolean    | tr_tracker_view
 | `hasScraped`              | boolean    | tr_tracker_view
 | `host`                    | string     | tr_tracker_view
@@ -1049,4 +1050,5 @@ Transmission 4.1.0 (`rpc-version-semver` 5.4.0, `rpc-version`: 18)
 | `torrent-get` | new arg `files.begin_piece`
 | `torrent-get` | new arg `files.end_piece`
 | `port-test` | new arg `ip_protocol`
+| `torrent-get` | new arg `trackerStats.downloader_count`
 | `torrent-get` | :warning: **DEPRECATED** `manualAnnounceTime`, it never worked
diff --git a/libtransmission/announcer.cc b/libtransmission/announcer.cc
index 242da76ba..36551fc41 100644
--- a/libtransmission/announcer.cc
+++ b/libtransmission/announcer.cc
@@ -1649,6 +1649,7 @@ namespace tracker_view_helpers
     view.seederCount = tracker.seeder_count().value_or(-1);
     view.leecherCount = tracker.leecher_count().value_or(-1);
     view.downloadCount = tracker.download_count().value_or(-1);
+    view.downloader_count = tracker.downloader_count().value_or(-1);
 
     if (view.isBackup)
     {
diff --git a/libtransmission/quark.cc b/libtransmission/quark.cc
index 35d8d0fc6..792ad18ec 100644
--- a/libtransmission/quark.cc
+++ b/libtransmission/quark.cc
@@ -102,6 +102,7 @@ auto constexpr MyStatic = std::array<std::string_view, TR_N_KEYS>{
     "downloaded-bytes"sv,
     "downloadedBytes"sv,
     "downloadedEver"sv,
+    "downloader_count"sv,
     "downloading-time-seconds"sv,
     "dropped"sv,
     "dropped6"sv,
diff --git a/libtransmission/quark.h b/libtransmission/quark.h
index def959bf9..9fd7f85bd 100644
--- a/libtransmission/quark.h
+++ b/libtransmission/quark.h
@@ -104,6 +104,7 @@ enum // NOLINT(performance-enum-size)
     TR_KEY_downloaded_bytes,
     TR_KEY_downloadedBytes,
     TR_KEY_downloadedEver,
+    TR_KEY_downloader_count,
     TR_KEY_downloading_time_seconds,
     TR_KEY_dropped,
     TR_KEY_dropped6,
diff --git a/libtransmission/rpcimpl.cc b/libtransmission/rpcimpl.cc
index d957f61e7..3cb29354b 100644
--- a/libtransmission/rpcimpl.cc
+++ b/libtransmission/rpcimpl.cc
@@ -408,10 +408,11 @@ namespace make_torrent_field_helpers
     for (size_t idx = 0U; idx != n_trackers; ++idx)
     {
         auto const tracker = tr_torrentTracker(&tor, idx);
-        auto stats_map = tr_variant::Map{ 27U };
+        auto stats_map = tr_variant::Map{ 28U };
         stats_map.try_emplace(TR_KEY_announce, tracker.announce);
         stats_map.try_emplace(TR_KEY_announceState, tracker.announceState);
         stats_map.try_emplace(TR_KEY_downloadCount, tracker.downloadCount);
+        stats_map.try_emplace(TR_KEY_downloader_count, tracker.downloader_count);
         stats_map.try_emplace(TR_KEY_hasAnnounced, tracker.hasAnnounced);
         stats_map.try_emplace(TR_KEY_hasScraped, tracker.hasScraped);
         stats_map.try_emplace(TR_KEY_host, tracker.host_and_port);
diff --git a/libtransmission/transmission.h b/libtransmission/transmission.h
index be464403d..09da13c18 100644
--- a/libtransmission/transmission.h
+++ b/libtransmission/transmission.h
@@ -1280,6 +1280,7 @@ struct tr_tracker_view
     int lastAnnouncePeerCount; // if hasAnnounced, the number of peers the tracker gave us
     int leecherCount; // number of leechers the tracker knows of, or -1 if unknown
     int seederCount; // number of seeders the tracker knows of, or -1 if unknown
+    int downloader_count; // number of downloaders (BEP-21) the tracker knows of, or -1 if unknown
 
     size_t tier; // which tier this tracker is in
     tr_tracker_id_t id; // unique transmission-generated ID for use in libtransmission API