diff --git a/src/hash.cpp b/src/hash.cpp
new file mode 100644
index 0000000..ebba1d7
--- /dev/null
+++ b/src/hash.cpp
@@ -0,0 +1 @@
+#include <stdplus/hash.hpp>
diff --git a/src/meson.build b/src/meson.build
index 7c4dabf..c4662ad 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -47,6 +47,7 @@
   'flags.cpp',
   'handle/copyable.cpp',
   'handle/managed.cpp',
+  'hash.cpp',
   'pinned.cpp',
   'raw.cpp',
   'signal.cpp',