diff --git a/releases.json b/releases.json
index 13681283a..7f44cb15a 100644
--- a/releases.json
+++ b/releases.json
@@ -2426,6 +2426,7 @@
       "msgpack-cxx"
     ],
     "versions": [
+      "6.1.1-2",
       "6.1.1-1",
       "6.1.0-2",
       "6.1.0-1",
diff --git a/subprojects/packagefiles/msgpackc-cxx/meson.build b/subprojects/packagefiles/msgpackc-cxx/meson.build
index 310e79570..2d6e4ee94 100644
--- a/subprojects/packagefiles/msgpackc-cxx/meson.build
+++ b/subprojects/packagefiles/msgpackc-cxx/meson.build
@@ -1,7 +1,7 @@
 project(
   'msgpack-cxx', 'cpp',
   version: '6.1.1',
-  meson_version: '>=0.47.0',
+  meson_version: '>=0.48.0',
 )
 
 args = []
@@ -33,4 +33,7 @@ msgpack_cxx_dep = declare_dependency(
   dependencies: boost_dep,
 )
 
+install_headers('include/msgpack.hpp')
+install_subdir('include/msgpack', install_dir: get_option('includedir'))
+
 subdir('test')