diff --git a/windows/types_windows.go b/windows/types_windows.go
index 265d797c..bbede404 100644
--- a/windows/types_windows.go
+++ b/windows/types_windows.go
@@ -1820,3 +1820,21 @@ const (
 	LOAD_LIBRARY_SEARCH_SYSTEM32_NO_FORWARDER = 0x00004000
 	LOAD_LIBRARY_OS_INTEGRITY_CONTINUITY      = 0x00008000
 )
+
+// RegNotifyChangeKeyValue notifyFilter flags.
+const (
+	// REG_NOTIFY_CHANGE_NAME notifies the caller if a subkey is added or deleted.
+	REG_NOTIFY_CHANGE_NAME = 0x00000001
+
+	// REG_NOTIFY_CHANGE_ATTRIBUTES notifies the caller of changes to the attributes of the key, such as the security descriptor information.
+	REG_NOTIFY_CHANGE_ATTRIBUTES = 0x00000002
+
+	// REG_NOTIFY_CHANGE_LAST_SET notifies the caller of changes to a value of the key. This can include adding or deleting a value, or changing an existing value.
+	REG_NOTIFY_CHANGE_LAST_SET = 0x00000004
+
+	// REG_NOTIFY_CHANGE_SECURITY notifies the caller of changes to the security descriptor of the key.
+	REG_NOTIFY_CHANGE_SECURITY = 0x00000008
+
+	// REG_NOTIFY_THREAD_AGNOSTIC indicates that the lifetime of the registration must not be tied to the lifetime of the thread issuing the RegNotifyChangeKeyValue call. Note: This flag value is only supported in Windows 8 and later.
+	REG_NOTIFY_THREAD_AGNOSTIC = 0x10000000
+)