diff --git a/setup.py b/setup.py
index 2eb888a4..57512961 100644
--- a/setup.py
+++ b/setup.py
@@ -207,6 +207,11 @@ def _build_dependencies_impl(self, build_dir, install_path, osx_arch=None):
         cmake_args = [cmake]
         cmake_args.append(f'-H{source_dir}')
         cmake_args.append(f'-B{build_dir}')
+        
+        # This is the minimum version of the Windows SDK needed for schannel.h with SCH_CREDENTIALS and 
+        # TLS_PARAMETERS. These are required to build Windows Binaries with TLS 1.3 support.
+        cmake_args.append('-DCMAKE_SYSTEM_VERSION=10.0.17763.0')
+
         cmake_args.extend(determine_generator_args())
         cmake_args.extend(determine_cross_compile_args())
         cmake_args.extend([