diff --git a/Makefile b/Makefile
index 487bdb5..832c650 100644
--- a/Makefile
+++ b/Makefile
@@ -12,6 +12,7 @@ XARFLAGS = -rc
 
 OBJ = \
 	  udev.o \
+	  udev_hwdb.o \
 	  udev_list.o \
 	  udev_device.o \
 	  udev_monitor.o \
diff --git a/udev.h b/udev.h
index cbfb5ae..ed9d056 100644
--- a/udev.h
+++ b/udev.h
@@ -9,6 +9,7 @@ extern "C" {
     for (list_entry = first_entry; list_entry; list_entry = udev_list_entry_get_next(list_entry))
 
 struct udev;
+struct udev_hwdb;
 struct udev_device;
 struct udev_monitor;
 struct udev_enumerate;
@@ -90,6 +91,11 @@ struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char
 struct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor);
 struct udev_monitor *udev_monitor_unref(struct udev_monitor *udev_monitor);
 
+struct udev_hwdb *udev_hwdb_new(struct udev *udev);
+struct udev_hwdb *udev_hwdb_ref(struct udev_hwdb *hwdb);
+struct udev_hwdb *udev_hwdb_unref(struct udev_hwdb *hwdb);
+struct udev_list_entry *udev_hwdb_get_properties_list_entry(struct udev_hwdb *hwdb, const char *modalias, unsigned int flags);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/udev_hwdb.c b/udev_hwdb.c
new file mode 100644
index 0000000..1582eb4
--- /dev/null
+++ b/udev_hwdb.c
@@ -0,0 +1,23 @@
+#include <stddef.h>
+
+#include "udev.h"
+
+UDEV_EXPORT struct udev_hwdb *udev_hwdb_new(struct udev *udev)
+{
+    return NULL;
+}
+
+UDEV_EXPORT struct udev_hwdb *udev_hwdb_ref(struct udev_hwdb *hwdb)
+{
+    return NULL;
+}
+
+UDEV_EXPORT struct udev_hwdb *udev_hwdb_unref(struct udev_hwdb *hwdb)
+{
+    return NULL;
+}
+
+UDEV_EXPORT struct udev_list_entry *udev_hwdb_get_properties_list_entry(struct udev_hwdb *hwdb, const char *modalias, unsigned int flags)
+{
+    return NULL;
+}