diff --git a/lib/std/json/stringify.zig b/lib/std/json/stringify.zig
index 37fd7efb17523161c20760dd930e9bc7776a15f0..add35e80bf1b49ccaa6e5bf7a6e0328e9c7f9d46 100644
--- a/lib/std/json/stringify.zig
+++ b/lib/std/json/stringify.zig
@@ -88,7 +88,7 @@ pub fn stringifyAlloc(
     allocator: Allocator,
     value: anytype,
     options: StringifyOptions,
-) error{OutOfMemory}![]const u8 {
+) error{OutOfMemory}![]u8 {
     var list = std.ArrayList(u8).init(allocator);
     errdefer list.deinit();
     try stringifyArbitraryDepth(allocator, value, options, list.writer());