diff --git a/repertory/librepertory/src/providers/sia/sia_provider.cpp b/repertory/librepertory/src/providers/sia/sia_provider.cpp
index 0c7a157d..9cbfae60 100644
--- a/repertory/librepertory/src/providers/sia/sia_provider.cpp
+++ b/repertory/librepertory/src/providers/sia/sia_provider.cpp
@@ -26,6 +26,7 @@
 #include "events/events.hpp"
 #include "file_manager/i_file_manager.hpp"
 #include "providers/base_provider.hpp"
+#include "providers/s3/s3_provider.hpp"
 #include "types/repertory.hpp"
 #include "utils/error_utils.hpp"
 #include "utils/file_utils.hpp"
@@ -35,6 +36,18 @@
 #include "utils/time.hpp"
 #include "utils/utils.hpp"
 
+namespace {
+[[nodiscard]] auto
+get_last_modified(const nlohmann::json &obj) -> std::uint64_t {
+  try {
+    return repertory::s3_provider::convert_api_date(
+        obj["modTime"].get<std::string>());
+  } catch (...) {
+    return repertory::utils::time::get_time_now();
+  }
+}
+} // namespace
+
 namespace repertory {
 sia_provider::sia_provider(app_config &config, i_http_comm &comm)
     : base_provider(config, comm) {}
@@ -130,13 +143,12 @@ auto sia_provider::get_directory_items_impl(
         }
 
         api_file file{};
-
         api_meta_map meta{};
         if (get_item_meta(entry_api_path, meta) == api_error::item_not_found) {
           file = create_api_file(entry_api_path, "",
                                  directory ? 0U
                                            : entry["size"].get<std::uint64_t>(),
-                                 utils::time::get_time_now());
+                                 get_last_modified(entry));
           get_api_item_added()(directory, file);
           auto res = get_item_meta(entry_api_path, meta);
           if (res != api_error::success) {
@@ -187,7 +199,8 @@ auto sia_provider::get_file(const std::string &api_path,
 
   api_meta_map meta{};
   if (get_item_meta(api_path, meta) == api_error::item_not_found) {
-    file = create_api_file(api_path, "", size, utils::time::get_time_now());
+    file = create_api_file(api_path, "", size,
+                           get_last_modified(file_data["object"]));
     get_api_item_added()(false, file);
   } else {
     file = create_api_file(api_path, size, meta);
@@ -223,7 +236,7 @@ auto sia_provider::get_file_list(api_file_list &list) const -> api_error {
             if (get_item_meta(entry_api_path, meta) ==
                 api_error::item_not_found) {
               auto dir = create_api_file(entry_api_path, "", 0U,
-                                         utils::time::get_time_now());
+                                         get_last_modified(entry));
               get_api_item_added()(true, dir);
             }
 
@@ -240,7 +253,7 @@ auto sia_provider::get_file_list(api_file_list &list) const -> api_error {
               api_error::item_not_found) {
             file = create_api_file(entry_api_path, "",
                                    entry["size"].get<std::uint64_t>(),
-                                   utils::time::get_time_now());
+                                   get_last_modified(entry));
             get_api_item_added()(false, file);
           } else {
             file = create_api_file(entry_api_path,