diff --git a/src/meson.build b/src/meson.build
index 6b1fea9..a6ff714 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -20,5 +20,6 @@
   subdir: 'stdplus')
 
 install_headers(
+  'stdplus/handle/copyable.hpp',
   'stdplus/handle/managed.hpp',
   subdir: 'stdplus/handle')