diff --git a/build.zig b/build.zig
index 947c212..b9d4a3a 100644
--- a/build.zig
+++ b/build.zig
@@ -64,6 +64,7 @@ pub fn build(b: *std.build.Builder) !void {
         std.Target.Os.Tag.windows => {
             try c_sources.append("src/windows/WinMiniFB.c");
             lib.linkSystemLibrary("gdi32");
+            try c_flags.append("-D_WIN32_WINNT=0x0601");
             switch (use_backend) {
                 .opengl, .default => {
                     try c_flags.append("-DUSE_OPENGL_API");