diff --git a/NEWS b/NEWS
index 25181d973..0836c5ce8 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,6 @@
 ver 0.21.24 (not yet released)
+* protocol
+  - "tagtypes" requires no permissions
 * fix unit test failure
 
 ver 0.21.23 (2020/04/23)
diff --git a/src/command/AllCommands.cxx b/src/command/AllCommands.cxx
index 7926b7128..3fb305527 100644
--- a/src/command/AllCommands.cxx
+++ b/src/command/AllCommands.cxx
@@ -193,7 +193,7 @@ static constexpr struct command commands[] = {
 	{ "subscribe", PERMISSION_READ, 1, 1, handle_subscribe },
 	{ "swap", PERMISSION_CONTROL, 2, 2, handle_swap },
 	{ "swapid", PERMISSION_CONTROL, 2, 2, handle_swapid },
-	{ "tagtypes", PERMISSION_READ, 0, -1, handle_tagtypes },
+	{ "tagtypes", PERMISSION_NONE, 0, -1, handle_tagtypes },
 	{ "toggleoutput", PERMISSION_ADMIN, 1, 1, handle_toggleoutput },
 #ifdef ENABLE_DATABASE
 	{ "unmount", PERMISSION_ADMIN, 1, 1, handle_unmount },