diff --git a/build.zig.zon b/build.zig.zon
index 2061de9..505ac35 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -5,8 +5,8 @@
     .minimum_zig_version = "0.16.0",
     .dependencies = .{
         .zat = .{
-            .url = "https://tangled.org/zat.dev/zat/archive/main",
-            .hash = "zat-0.3.30-5PuC7iRkDAAusYf4oaOtbmZkGf-ZZ9gEU60ySf_xtuu6",
+            .url = "https://tangled.org/zat.dev/zat/archive/v0.4.0.tar.gz",
+            .hash = "zat-0.4.0-5PuC7iFkDAD8OoBB-bDlexUoSI24rveRWfINE90Oxebs",
         },
         .websocket = .{
             .url = "https://github.com/zzstoatzz/websocket.zig/archive/73429df.tar.gz",