diff --git a/test/tests.zig b/test/tests.zig
index 26e684cd0d..517d789b18 100644
--- a/test/tests.zig
+++ b/test/tests.zig
@@ -112,6 +112,7 @@ const test_targets = blk: {
                 .os_tag = .windows,
                 .abi = .gnu,
             },
+            .single_threaded = true, // https://github.com/ziglang/zig/issues/15075
             .backend = .stage2_x86_64,
         },