diff --git a/misc-scripts/attribute_types/attrib_type.txt b/misc-scripts/attribute_types/attrib_type.txt
index 47480f66f2f032208dffc8d115e63cffe4118cf1..84f35cf9d9bd900887846c642311977e1961d379 100644
--- a/misc-scripts/attribute_types/attrib_type.txt
+++ b/misc-scripts/attribute_types/attrib_type.txt
@@ -376,3 +376,7 @@
 
 # attribute to indicate that human evidence for a low-coverage genomes' projected transcript has been removed
 315	NoEvidence	Evidence for projected transcript removed	Supporting evidence for this projected transcript has been removed from the human database
+
+# attribute to indicate if a seq_region is circular
+316	circular_seq	Circular sequence	Circular chromosome or plasmid molecule
+317	external_db	External database	External database to which seq_region name can be linked