diff --git a/r5dev/thirdparty/curl/CMakeLists.txt b/r5dev/thirdparty/curl/CMakeLists.txt
index 95f97abe..8b353fe9 100644
--- a/r5dev/thirdparty/curl/CMakeLists.txt
+++ b/r5dev/thirdparty/curl/CMakeLists.txt
@@ -276,6 +276,7 @@ target_compile_definitions( ${PROJECT_NAME} PRIVATE
   CURL_STATICLIB
   USE_WINDOWS_SSPI
   USE_SCHANNEL
+  ENABLE_IPV6
 )
 
 target_include_directories( ${PROJECT_NAME} PRIVATE