diff --git a/build.zig b/build.zig
index b6c89f8..29bb379 100644
--- a/build.zig
+++ b/build.zig
@@ -2,6 +2,6 @@ const std = @import("std");
 
 pub fn build(b: *std.Build) void {
     _ = b.addModule("diffz", .{
-        .source_file = .{ .path = "DiffMatchPatch.zig" },
+        .root_source_file = .{ .path = "DiffMatchPatch.zig" },
     });
 }