diff --git a/src/extensions/meson.build b/src/extensions/meson.build
index a7f5d3cb3..7cb9cb560 100644
--- a/src/extensions/meson.build
+++ b/src/extensions/meson.build
@@ -1,5 +1,6 @@
 pipewire_ext_headers = [
   'client-node.h',
+  'metadata.h',
   'protocol-native.h',
 ]