diff --git a/Meta/CMake/vcpkg/overlay-ports/curl/portfile.cmake b/Meta/CMake/vcpkg/overlay-ports/curl/portfile.cmake
index acace7742e..145ccdc923 100644
--- a/Meta/CMake/vcpkg/overlay-ports/curl/portfile.cmake
+++ b/Meta/CMake/vcpkg/overlay-ports/curl/portfile.cmake
@@ -14,6 +14,7 @@ vcpkg_from_github(
 vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
     FEATURES
         http2       USE_NGHTTP2
+        http3       USE_NGTCP2
         wolfssl     CURL_USE_WOLFSSL
         openssl     CURL_USE_OPENSSL
         mbedtls     CURL_USE_MBEDTLS
diff --git a/Meta/CMake/vcpkg/overlay-ports/curl/vcpkg.json b/Meta/CMake/vcpkg/overlay-ports/curl/vcpkg.json
index 5ba1727c37..0f463941cb 100644
--- a/Meta/CMake/vcpkg/overlay-ports/curl/vcpkg.json
+++ b/Meta/CMake/vcpkg/overlay-ports/curl/vcpkg.json
@@ -65,12 +65,31 @@
           "name": "curl",
           "default-features": false,
           "features": [
-            "ssl"
+            "openssl"
           ]
         },
         "nghttp2"
       ]
     },
+    "http3": {
+      "description": "HTTP3 support",
+      "dependencies": [
+        {
+          "name": "curl",
+          "default-features": false,
+          "features": [
+            "openssl"
+          ]
+        },
+        "nghttp3",
+        {
+          "name": "ngtcp2",
+          "features": [
+            "openssl"
+          ]
+        }
+      ]
+    },
     "httpsrr": {
       "description": "enable support for HTTPS RR"
     },
@@ -125,7 +144,7 @@
       ]
     },
     "non-http": {
-      "description": "Enables protocols beyond HTTP/HTTPS/HTTP2"
+      "description": "Enables protocols beyond HTTP/HTTPS/HTTP2/HTTP3"
     },
     "openssl": {
       "description": "SSL support (OpenSSL)",
diff --git a/Services/RequestServer/ConnectionFromClient.cpp b/Services/RequestServer/ConnectionFromClient.cpp
index 838d8d3988..730182af50 100644
--- a/Services/RequestServer/ConnectionFromClient.cpp
+++ b/Services/RequestServer/ConnectionFromClient.cpp
@@ -13,6 +13,7 @@
 #include <LibCore/EventLoop.h>
 #include <LibCore/Proxy.h>
 #include <LibCore/Socket.h>
+#include <LibCore/StandardPaths.h>
 #include <LibRequests/NetworkError.h>
 #include <LibRequests/RequestTimingInfo.h>
 #include <LibRequests/WebSocket.h>
@@ -315,6 +316,8 @@ ConnectionFromClient::ConnectionFromClient(NonnullOwnPtr<IPC::Transport> transpo
 {
     s_connections.set(client_id(), *this);
 
+    m_alt_svc_cache_path = ByteString::formatted("{}/Ladybird/alt-svc-cache.txt", Core::StandardPaths::user_data_directory());
+
     m_curl_multi = curl_multi_init();
 
     auto set_option = [this](auto option, auto value) {
@@ -488,6 +491,7 @@ void ConnectionFromClient::start_request(i32 request_id, ByteString method, URL:
             set_option(CURLOPT_PORT, url.port_or_default());
             set_option(CURLOPT_CONNECTTIMEOUT, s_connect_timeout_seconds);
             set_option(CURLOPT_PIPEWAIT, 1L);
+            set_option(CURLOPT_ALTSVC, m_alt_svc_cache_path.characters());
 
             bool did_set_body = false;
 
diff --git a/Services/RequestServer/ConnectionFromClient.h b/Services/RequestServer/ConnectionFromClient.h
index 87d2550d51..bd9a8cfd24 100644
--- a/Services/RequestServer/ConnectionFromClient.h
+++ b/Services/RequestServer/ConnectionFromClient.h
@@ -70,6 +70,7 @@ private:
     HashMap<int, NonnullRefPtr<Core::Notifier>> m_read_notifiers;
     HashMap<int, NonnullRefPtr<Core::Notifier>> m_write_notifiers;
     NonnullRefPtr<Resolver> m_resolver;
+    ByteString m_alt_svc_cache_path;
 };
 
 // FIXME: Find a good home for this
diff --git a/vcpkg.json b/vcpkg.json
index c2e30ad6c5..e47384033e 100644
--- a/vcpkg.json
+++ b/vcpkg.json
@@ -14,9 +14,12 @@
     },
     {
       "name": "curl",
+      "default-features": false,
       "features": [
         "brotli",
+        "non-http",
         "http2",
+        "http3",
         "openssl",
         "websockets"
       ]