diff --git a/include/Http.h b/include/Http.h
index c3bbb0e..69cca9f 100644
--- a/include/Http.h
+++ b/include/Http.h
@@ -9,9 +9,9 @@
 #include <string>
 class HTTP {
 public:
-    static bool Download(const std::string& IP, const std::string& Path);
+    static bool Download(const std::string& IP, const std::string& Fields, const std::string& Path);
     static std::string Post(const std::string& IP, const std::string& Fields);
-    static std::string Get(const std::string& IP);
+    static std::string Get(const std::string& IP, const std::string& Fields = "");
     static bool ProgressBar(size_t c, size_t t);
     static void StartProxy();
 public:
diff --git a/src/Network/Http.cpp b/src/Network/Http.cpp
index eef2143..0936dfe 100644
--- a/src/Network/Http.cpp
+++ b/src/Network/Http.cpp
@@ -68,7 +68,7 @@ static size_t CurlWriteCallback(void* contents, size_t size, size_t nmemb, void*
 }
 
 bool HTTP::isDownload = false;
-std::string HTTP::Get(const std::string& IP) {
+std::string HTTP::Get(const std::string& IP, const std::string& Fields) {
     std::string Ret;
     static thread_local CURL* curl = curl_easy_init();
     if (curl) {
@@ -78,6 +78,11 @@ std::string HTTP::Get(const std::string& IP) {
         curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)&Ret);
         curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 10); // seconds
         curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+        if (!Fields.empty()) {
+            curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "GET");
+            curl_easy_setopt(curl, CURLOPT_POSTFIELDS, Fields.c_str());
+            curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, Fields.size());
+        }
         res = curl_easy_perform(curl);
         if (res != CURLE_OK) {
             error("GET to " + IP + " failed: " + std::string(curl_easy_strerror(res)));
@@ -119,12 +124,12 @@ std::string HTTP::Post(const std::string& IP, const std::string& Fields) {
     return Ret;
 }
 
-bool HTTP::Download(const std::string& IP, const std::string& Path) {
+bool HTTP::Download(const std::string& IP, const std::string& Fields, const std::string& Path) {
     static std::mutex Lock;
     std::scoped_lock Guard(Lock);
 
     info("Downloading an update (this may take a while)");
-    std::string Ret = Get(IP);
+    std::string Ret = Get(IP, Fields);
 
     if (Ret.empty()) {
         error("Download failed");
diff --git a/src/Startup.cpp b/src/Startup.cpp
index 6ea387a..8e8f28d 100644
--- a/src/Startup.cpp
+++ b/src/Startup.cpp
@@ -164,9 +164,9 @@ void CheckName() {
 }
 
 void CheckForUpdates(const std::string& CV) {
-    std::string LatestHash = HTTP::Get("https://backend.beammp.com/sha/launcher?branch=" + Branch + "&pk=" + PublicKey);
-    std::string LatestVersion = HTTP::Get(
-        "https://backend.beammp.com/version/launcher?branch=" + Branch + "&pk=" + PublicKey);
+    std::string requestBody = R"({"branch": ")" + Branch + R"(","pk":")" + PublicKey + R"("})";
+    std::string LatestHash = HTTP::Get("https://backend.beammp.com/sha/launcher", requestBody);
+    std::string LatestVersion = HTTP::Get("https://backend.beammp.com/version/launcher", requestBody);
 
     transform(LatestHash.begin(), LatestHash.end(), LatestHash.begin(), ::tolower);
     std::string EP(GetEP() + GetEN()), Back(GetEP() + "BeamMP-Launcher.back");
@@ -182,11 +182,7 @@ void CheckForUpdates(const std::string& CV) {
             fs::remove(Back);
             fs::rename(EP, Back);
             info("Downloading Launcher update " + LatestHash);
-            HTTP::Download(
-                "https://backend.beammp.com/builds/launcher?download=true"
-                "&pk="
-                    + PublicKey + "&branch=" + Branch,
-                EP);
+            HTTP::Download("https://backend.beammp.com/builds/launcher?download=true", requestBody, EP);
             URelaunch();
 #endif
         } else {
@@ -307,7 +303,8 @@ void PreGame(const std::string& GamePath) {
     info("Game user path: " + GetGamePath());
 
     if (!options.no_download) {
-        std::string LatestHash = HTTP::Get("https://backend.beammp.com/sha/mod?branch=" + Branch + "&pk=" + PublicKey);
+        std::string requestBody = R"({"branch": ")" + Branch + R"(","pk":")" + PublicKey + R"("})";
+        std::string LatestHash = HTTP::Get("https://backend.beammp.com/sha/mod", requestBody);
         transform(LatestHash.begin(), LatestHash.end(), LatestHash.begin(), ::tolower);
         LatestHash.erase(std::remove_if(LatestHash.begin(), LatestHash.end(),
                              [](auto const& c) -> bool { return !std::isalnum(c); }),
@@ -332,10 +329,7 @@ void PreGame(const std::string& GamePath) {
 
         if (FileHash != LatestHash) {
             info("Downloading BeamMP Update " + LatestHash);
-            HTTP::Download("https://backend.beammp.com/builds/client?download=true"
-                           "&pk="
-                    + PublicKey + "&branch=" + Branch,
-                ZipPath);
+            HTTP::Download("https://backend.beammp.com/builds/client?download=true", requestBody, ZipPath);
         }
 
         std::string Target(GetGamePath() + "mods/unpacked/beammp");