diff --git a/doc/ch04-md-contrvocabs.adoc b/doc/ch04-md-contrvocabs.adoc
index 8f0498a..544f593 100644
--- a/doc/ch04-md-contrvocabs.adoc
+++ b/doc/ch04-md-contrvocabs.adoc
@@ -64,6 +64,10 @@ data. This is primarily Sentinel datasets.
 
 |AeN |Datasets from the Arven etter Nansen Project.
 
+|TONE |Datasets from the Troll Observing Network in Antarctica.
+
+|NySMAC |Datasets from Ny-Ålesund in the context of NySMAC (Ny-Ålesund Science Managers Committee).
+
 |=======================================================================
 
 <<collection>>
diff --git a/thesauri/mmd-vocabulary.ttl b/thesauri/mmd-vocabulary.ttl
index 0bf89e9..479ec40 100644
--- a/thesauri/mmd-vocabulary.ttl
+++ b/thesauri/mmd-vocabulary.ttl
@@ -1071,8 +1071,9 @@
   a skos:Collection, isothes:ConceptGroup ;
   skos:inScheme <https://vocab.met.no/mmd>; 
   skos:prefLabel "Collection Keywords"@en ;
+  skos:changeNote "2024-02-21, Added Concept \"TONE\" and \"NySMAC\" in collection"@en ;
   skos:definition "The purpose of this vocabulary is to identify which collection a dataset belong to. This is used to identify sets when serving metadata through e.g. OAI-PMH or to identify which data to present in e.g. a project specific portal when all metadata records are in the same repository."@en ;
-  skos:member <https://vocab.met.no/mmd/Collection_Keywords/CC>, <https://vocab.met.no/mmd/Collection_Keywords/NMAP>, <https://vocab.met.no/mmd/Collection_Keywords/ADC>, <https://vocab.met.no/mmd/Collection_Keywords/GCW>, <https://vocab.met.no/mmd/Collection_Keywords/NMDC>, <https://vocab.met.no/mmd/Collection_Keywords/SIOS>, <https://vocab.met.no/mmd/Collection_Keywords/NSDN>, <https://vocab.met.no/mmd/Collection_Keywords/DOKI>, <https://vocab.met.no/mmd/Collection_Keywords/DAM>, <https://vocab.met.no/mmd/Collection_Keywords/ACCESS>, <https://vocab.met.no/mmd/Collection_Keywords/NBS>, <https://vocab.met.no/mmd/Collection_Keywords/APPL>, <https://vocab.met.no/mmd/Collection_Keywords/YOPP>, <https://vocab.met.no/mmd/Collection_Keywords/METNCS>, <https://vocab.met.no/mmd/Collection_Keywords/SESS2018>, <https://vocab.met.no/mmd/Collection_Keywords/SESS2019>, <https://vocab.met.no/mmd/Collection_Keywords/SESS2020>, <https://vocab.met.no/mmd/Collection_Keywords/SESS2022>, <https://vocab.met.no/mmd/Collection_Keywords/SIOSCD>, <https://vocab.met.no/mmd/Collection_Keywords/SIOSAP>, <https://vocab.met.no/mmd/Collection_Keywords/SIOSIN>, <https://vocab.met.no/mmd/Collection_Keywords/CVL>, <https://vocab.met.no/mmd/Collection_Keywords/AeN> .
+  skos:member <https://vocab.met.no/mmd/Collection_Keywords/CC>, <https://vocab.met.no/mmd/Collection_Keywords/NMAP>, <https://vocab.met.no/mmd/Collection_Keywords/ADC>, <https://vocab.met.no/mmd/Collection_Keywords/GCW>, <https://vocab.met.no/mmd/Collection_Keywords/NMDC>, <https://vocab.met.no/mmd/Collection_Keywords/SIOS>, <https://vocab.met.no/mmd/Collection_Keywords/NSDN>, <https://vocab.met.no/mmd/Collection_Keywords/DOKI>, <https://vocab.met.no/mmd/Collection_Keywords/DAM>, <https://vocab.met.no/mmd/Collection_Keywords/ACCESS>, <https://vocab.met.no/mmd/Collection_Keywords/NBS>, <https://vocab.met.no/mmd/Collection_Keywords/APPL>, <https://vocab.met.no/mmd/Collection_Keywords/YOPP>, <https://vocab.met.no/mmd/Collection_Keywords/METNCS>, <https://vocab.met.no/mmd/Collection_Keywords/SESS2018>, <https://vocab.met.no/mmd/Collection_Keywords/SESS2019>, <https://vocab.met.no/mmd/Collection_Keywords/SESS2020>, <https://vocab.met.no/mmd/Collection_Keywords/SESS2022>, <https://vocab.met.no/mmd/Collection_Keywords/SIOSCD>, <https://vocab.met.no/mmd/Collection_Keywords/SIOSAP>, <https://vocab.met.no/mmd/Collection_Keywords/SIOSIN>, <https://vocab.met.no/mmd/Collection_Keywords/CVL>, <https://vocab.met.no/mmd/Collection_Keywords/AeN>, <https://vocab.met.no/mmd/Collection_Keywords/TONE>, <https://vocab.met.no/mmd/Collection_Keywords/NySMAC> .
 
 <https://vocab.met.no/mmd/Collection_Keywords/CC>
   a skos:Concept ;
@@ -1198,6 +1199,18 @@
   rdfs:seeAlso <https://arvenetternansen.com/> ; 
   skos:definition "Datasets from the Arven etter Nansen Project."@en .
 
+<https://vocab.met.no/mmd/Collection_Keywords/TONE>
+  a skos:Concept ;
+  skos:prefLabel "TONE"@en ;
+  rdfs:seeAlso <https://www.npolar.no/en/tone/> ;
+  skos:definition "Datasets from the Troll Observing Network in Antarctica."@en .
+
+<https://vocab.met.no/mmd/Collection_Keywords/NySMAC>
+  a skos:Concept ;
+  skos:prefLabel "NySMAC"@en ;
+  rdfs:seeAlso <https://nyalesundresearch.no/nysmac/> ;
+  skos:definition "Datasets from Ny-Ålesund in the context of NySMAC (Ny-Ålesund Science Managers Committee)."@en .
+
 
 <https://vocab.met.no/mmd/Instrument_Modes>
   a skos:Collection, <http://purl.org/iso25964/skos-thes#ConceptGroup> ;
diff --git a/thesauri/mmd-vocabulary.xml b/thesauri/mmd-vocabulary.xml
index a5acb16..9083d5f 100644
--- a/thesauri/mmd-vocabulary.xml
+++ b/thesauri/mmd-vocabulary.xml
@@ -1414,6 +1414,7 @@
     <rdf:type rdf:resource="http://purl.org/iso25964/skos-thes#ConceptGroup"/>
     <skos:inScheme rdf:resource="https://vocab.met.no/mmd"/>
     <skos:prefLabel xml:lang="en">Collection Keywords</skos:prefLabel>
+    <skos:changeNote xml:lang="en">2024-02-21, Added Concept \"TONE\" and \"NySMAC\" in collection</skos:changeNote>
     <skos:definition xml:lang="en">The purpose of this vocabulary is to identify which collection a dataset belong to. This is used to identify sets when serving metadata through e.g. OAI-PMH or to identify which data to present in e.g. a project specific portal when all metadata records are in the same repository.</skos:definition>
     <skos:member>
       <skos:Concept rdf:about="https://vocab.met.no/mmd/Collection_Keywords/CC">
@@ -1585,6 +1586,22 @@
       </skos:Concept>
     </skos:member>
 
+    <skos:member>
+      <skos:Concept rdf:about="https://vocab.met.no/mmd/Collection_Keywords/TONE">
+        <skos:prefLabel xml:lang="en">TONE</skos:prefLabel>
+        <rdfs:seeAlso rdf:resource="https://www.npolar.no/en/tone/"/>
+        <skos:definition xml:lang="en">Datasets from the Troll Observing Network in Antarctica.</skos:definition>
+      </skos:Concept>
+    </skos:member>
+
+    <skos:member>
+      <skos:Concept rdf:about="https://vocab.met.no/mmd/Collection_Keywords/NySMAC">
+        <skos:prefLabel xml:lang="en">NySMAC</skos:prefLabel>
+        <rdfs:seeAlso rdf:resource="https://nyalesundresearch.no/nysmac/"/>
+        <skos:definition xml:lang="en">Datasets from Ny-Ålesund in the context of NySMAC (Ny-Ålesund Science Managers Committee).</skos:definition>
+      </skos:Concept>
+    </skos:member>
+
   </skos:Collection>
 
   <skos:Collection rdf:about="https://vocab.met.no/mmd/Instrument_Modes">
diff --git a/xsd/mmd.xsd b/xsd/mmd.xsd
index 251a69c..fe66f51 100644
--- a/xsd/mmd.xsd
+++ b/xsd/mmd.xsd
@@ -427,6 +427,8 @@
             <xs:enumeration value="SIOSIN"></xs:enumeration>
             <xs:enumeration value="CVL"></xs:enumeration>
             <xs:enumeration value="AeN"></xs:enumeration>
+            <xs:enumeration value="TONE"></xs:enumeration>
+            <xs:enumeration value="NySMAC"></xs:enumeration>
         </xs:restriction>
     </xs:simpleType>
 
diff --git a/xsd/mmd_strict.xsd b/xsd/mmd_strict.xsd
index 1c6d164..d635e14 100644
--- a/xsd/mmd_strict.xsd
+++ b/xsd/mmd_strict.xsd
@@ -451,6 +451,8 @@
             <xs:enumeration value="SIOSIN"></xs:enumeration>
             <xs:enumeration value="CVL"></xs:enumeration>
             <xs:enumeration value="AeN"></xs:enumeration>
+            <xs:enumeration value="TONE"></xs:enumeration>
+            <xs:enumeration value="NySMAC"></xs:enumeration>
         </xs:restriction>
     </xs:simpleType>