diff --git a/psi-ms.obo b/psi-ms.obo
index 0c8889f..5f2b55d 100644
--- a/psi-ms.obo
+++ b/psi-ms.obo
@@ -1,6 +1,6 @@
 format-version: 1.2
-data-version: 4.1.146
-date: 05:04:2024 13:22
+data-version: 4.1.147
+date: 12:04:2024 13:22
 saved-by: Joshua Klein
 auto-generated-by: OBO-Edit 2.3.1
 import: http://purl.obolibrary.org/obo/pato.obo
@@ -2893,6 +2893,12 @@ name: laser desorption ionization
 def: "The formation of gas-phase ions by the interaction of a pulsed laser with a solid or liquid material." [PSI:MS]
 is_a: MS:1000247 ! desorption ionization
 
+[Term]
+id: MS:1000394
+name: no sequence database
+def: "No reference sequence database was used in the search process to determine the identified peptide sequence, for example as with de novo sequencing." [PSI:PI]
+is_a: MS:1001347 ! database file format
+
 [Term]
 id: MS:1000395
 name: liquid secondary ionization
@@ -24081,7 +24087,7 @@ def: "The fraction of total protein abundance in a mass spectrometry run or a gr
 comment: "High values may indicate a sample handling issue, and/or insufficient sample concentration."
 is_a: MS:4000003 ! single value
 relationship: has_metric_category MS:4000008 ! ID based metric
-relationship: has_value_type xsd:float ! The allowed value-type for this CV 
+relationship: has_value_type xsd:float ! The allowed value-type for this CV
 relationship: has_domain MS:1002305 ! value between 0 and 1 inclusive
 relationship: has_order MS:1002109 ! lower score better
 synonym: "PG: Contaminants" NARROW []