diff --git a/include/misc/Updater.h b/include/misc/Updater.h
index cfc6292..c7af8cf 100644
--- a/include/misc/Updater.h
+++ b/include/misc/Updater.h
@@ -2,6 +2,8 @@
 
 #include "misc/DataBuffer.h"
 
+#include <ctime>
+
 namespace td {
 namespace utils {
 
@@ -30,7 +32,7 @@ public:
     static void removeOldFile();
 private:
     std::string getDownloadFileURL();
-    std::uint32_t getLocalFileSize();
+    std::time_t getLocalFileTimeStamp();
 };
 
 } // namespace utils
diff --git a/src/misc/Updater.cpp b/src/misc/Updater.cpp
index 7616ba5..af4d08a 100644
--- a/src/misc/Updater.cpp
+++ b/src/misc/Updater.cpp
@@ -19,11 +19,16 @@ bool Updater::checkUpdate() {
 
     httplib::Client client("thesims.freeboxos.fr", 30000);
     if (auto res = client.Head(newFileUrl.c_str())) {
-        
-        std::uint32_t distantFileSize = std::stol(res.value().get_header_value("Content-Length"));
-        std::uint32_t localFileSize = getLocalFileSize();
+        std::string distantFileCreation = res.value().get_header_value("Last-Modified");
 
-        if (distantFileSize != localFileSize) {
+        char formatedTime[100];
+        std::time_t localFileTileStamp = getLocalFileTimeStamp();
+
+        std::strftime(formatedTime, sizeof(formatedTime), "%a, %d %b %Y %H:%M:%S GMT", std::gmtime(&localFileTileStamp));
+
+        std::string localFileCreation = formatedTime;
+
+        if (distantFileCreation != localFileCreation) {
             return true;
         }
         return false;
@@ -33,13 +38,23 @@ bool Updater::checkUpdate() {
     }
 }
 
-std::uint32_t Updater::getLocalFileSize() {
+std::time_t Updater::getLocalFileTimeStamp(){
+    #ifdef _WIN32
     std::string localFile = getLocalFilePath();
 
-    if (localFile.empty()) return 0;
+    WIN32_FILE_ATTRIBUTE_DATA fileInfo;
 
-    std::ifstream in(localFile, std::ifstream::ate | std::ifstream::binary);
-    return in.tellg();
+    if(GetFileAttributesEx(localFile.c_str(), GetFileExInfoStandard, &fileInfo) > 0){
+        ULARGE_INTEGER ull;
+        ull.LowPart = fileInfo.ftCreationTime.dwLowDateTime;
+        ull.HighPart = fileInfo.ftCreationTime.dwHighDateTime;
+
+        time_t lastModified =  ull.QuadPart / 10000000ULL - 11644473600ULL;
+
+        return lastModified;
+    }
+    #endif
+    return 0;
 }
 
 std::string Updater::getDownloadFileURL() {