diff --git a/t/13-localization/update-deparse.raku b/t/13-localization/update-deparse.raku
index 455d30bb1fb..7f812a68c63 100755
--- a/t/13-localization/update-deparse.raku
+++ b/t/13-localization/update-deparse.raku
@@ -1,4 +1,4 @@
-#!/usr/bin/env raku
+#!/usr/bin/env RAKUDO_RAKUAST=1 raku
 
 use v6.e.PREVIEW;
 use RakuAST::Deparse::L10N;