diff --git a/src/ontology/cl-edit.owl b/src/ontology/cl-edit.owl
index 7894ba7ef..854d7cb34 100644
--- a/src/ontology/cl-edit.owl
+++ b/src/ontology/cl-edit.owl
@@ -1893,6 +1893,7 @@ Declaration(Class(obo:CL_0011020))
 Declaration(Class(obo:CL_0011021))
 Declaration(Class(obo:CL_0011022))
 Declaration(Class(obo:CL_0011023))
+Declaration(Class(obo:CL_0011024))
 Declaration(Class(obo:CL_0011100))
 Declaration(Class(obo:CL_0011101))
 Declaration(Class(obo:CL_0011102))
@@ -22113,6 +22114,17 @@ AnnotationAssertion(rdfs:label obo:CL_0011023 "CD25+ mast cell")
 EquivalentClasses(obo:CL_0011023 ObjectIntersectionOf(obo:CL_0001063 ObjectSomeValuesFrom(obo:RO_0001000 obo:CL_0000097) ObjectSomeValuesFrom(obo:RO_0002104 obo:PR_000001380)))
 SubClassOf(obo:CL_0011023 obo:CL_0001063)
 
+# Class: obo:CL_0011024 (double negative T regulatory cell)
+
+AnnotationAssertion(Annotation(oboInOwl:hasDbXref "PMID:16285891") obo:IAO_0000115 obo:CL_0011024 "A double negative thymocyte that is CD3-positive, CD4-negative, CD8-negative, that that are present in the periphery in very low numbers and predominantly produce INF-gamma, TNF-alpha, and a low amount of TGF-beta, but not IL-2, IL-4, IL-10 or IL-13 upon activation.")
+AnnotationAssertion(oboInOwl:created_by obo:CL_0011024 <http://orcid.org/0000-0001-5208-3432>)
+AnnotationAssertion(oboInOwl:hasExactSynonym obo:CL_0011024 "CD4-negative, CD8-negative, alpha-beta regulatory T cells")
+AnnotationAssertion(oboInOwl:hasExactSynonym obo:CL_0011024 "DN Treg")
+AnnotationAssertion(oboInOwl:hasExactSynonym obo:CL_0011024 "double-negative alpha-beta regulatory T cell")
+AnnotationAssertion(rdfs:label obo:CL_0011024 "double negative T regulatory cell")
+EquivalentClasses(obo:CL_0011024 ObjectIntersectionOf(obo:CL_0002489 ObjectSomeValuesFrom(obo:RO_0002215 obo:GO_0050777)))
+SubClassOf(obo:CL_0011024 obo:CL_0002489)
+
 # Class: obo:CL_0011100 (galanergic neuron)
 
 AnnotationAssertion(Annotation(oboInOwl:hasDbXref "GOC:NV") Annotation(oboInOwl:hasDbXref "PMID:23159249") Annotation(oboInOwl:hasDbXref "ZFIN:CVS") Annotation(oboInOwl:hasDbXref "ZFIN:YB") obo:IAO_0000115 obo:CL_0011100 "Neuron that secretes the neurotransmitter galanin.")