diff --git a/include/meson.build b/include/meson.build
index d7cf82b..5909aa0 100644
--- a/include/meson.build
+++ b/include/meson.build
@@ -16,6 +16,7 @@
   'stdplus/pinned.hpp',
   'stdplus/raw.hpp',
   'stdplus/signal.hpp',
+  'stdplus/str/buf.hpp',
   'stdplus/str/cat.hpp',
   'stdplus/str/cexpr.hpp',
   'stdplus/str/maps.hpp',