diff --git a/build.zig b/build.zig
index a0e4bd4b0d414829e185c60c8895211af0709a5c..7e0cdd4f26e27275035d34009df012ba48cb0a13 100644
--- a/build.zig
+++ b/build.zig
@@ -798,7 +798,7 @@ pub fn build(b: *std.Build) !void {
         .test_filters = test_filters,
         .test_target_filters = test_target_filters,
         .skip_wasm = skip_wasm,
-        .max_rss = 3_500_000_000,
+        .max_rss = 4_300_000_000,
     })) |test_libc_nsz_step| test_step.dependOn(test_libc_nsz_step);
 }