diff --git a/src/ontology/efo-edit.owl b/src/ontology/efo-edit.owl
index 5b82e267..c7274da5 100644
--- a/src/ontology/efo-edit.owl
+++ b/src/ontology/efo-edit.owl
@@ -159738,6 +159738,10 @@ SubClassOf(efo:EFO_0008632 efo:EFO_0002699)
 
 AnnotationAssertion(obo:IAO_0000115 efo:EFO_0008633 "The ONT GridION X5 is a sequencing machine developed by Oxford Nanopore Technologies.")
 AnnotationAssertion(obo:IAO_0000117 efo:EFO_0008633 "Dani Welter")
+AnnotationAssertion(oboInOwl:hasExactSynonym efo:EFO_0008633 "GridION Mk1")
+AnnotationAssertion(oboInOwl:hasExactSynonym efo:EFO_0008633 "GridION Sequencing Device Mk1")
+AnnotationAssertion(oboInOwl:hasExactSynonym efo:EFO_0008633 "ONT GridION Mk1")
+AnnotationAssertion(oboInOwl:hasExactSynonym efo:EFO_0008633 "Oxford Nanopore Technologies GridION Mk1")
 AnnotationAssertion(rdfs:label efo:EFO_0008633 "ONT GridION X5")
 SubClassOf(efo:EFO_0008633 efo:EFO_0002699)