diff --git a/PKGBUILD b/PKGBUILD
index 847c811..162fe49 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -48,5 +48,6 @@ package() {
   make DESTDIR="$pkgdir" install
   cd "$srcdir/cppzmq-$_cppver"
   install -Dm644 zmq.hpp "$pkgdir/usr/include/zmq.hpp"
+  install -Dm644 zmq_addon.hpp "$pkgdir/usr/include/zmq_addon.hpp"
 }