diff --git a/definitions/region/common.yaml b/definitions/region/common.yaml
index 3929c95d..8985bcdd 100644
--- a/definitions/region/common.yaml
+++ b/definitions/region/common.yaml
@@ -7,6 +7,7 @@
 # The R5 definitions are taken from the call for submissions
 # to the AR6 WG3 scenario ensemble
 # https://data.ece.iiasa.ac.at/ar6-scenario-submission/#/about
+# and then updated afterwards with updates in territories.
 - R5:
     - OECD & EU (R5):
         description: OECD (membership status 1990) and EU member states and candidates
@@ -66,11 +67,11 @@
         ssp: R5.2LAM
         countries: [
           Antigua and Barbuda, Argentina, Aruba, Bahamas, Barbados, Belize,
-          Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Dominican Republic,
+          Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Curaçao, Dominican Republic,
           Ecuador, El Salvador, French Guiana, Grenada, Guadeloupe, Guatemala,
           Guyana, Haiti, Honduras, Jamaica, Martinique, Mexico, Nicaragua, Panama,
           Paraguay, Peru, Saint Kitts and Nevis, Saint Lucia,
-          Saint Vincent and the Grenadines, Suriname, Trinidad and Tobago,
+          Saint Vincent and the Grenadines, Sint Maarten (Dutch part), Suriname, Trinidad and Tobago,
           United States Virgin Islands, Uruguay, Venezuela
         ]
     - Other (R5):
@@ -157,10 +158,10 @@
         navigate: R9LAM
         countries: [
           Antigua and Barbuda, Argentina, Aruba, Bahamas, Barbados, Belize,
-          Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Dominican Republic,
+          Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Curaçao, Dominican Republic,
           Ecuador, El Salvador, French Guiana, Grenada, Guadeloupe, Guatemala, Guyana,
           Haiti, Honduras, Jamaica, Martinique, Mexico, Nicaragua, Panama, Paraguay,
-          Peru, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines,
+          Peru, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Sint Maarten (Dutch part),
           Suriname, Trinidad and Tobago, United States Virgin Islands, Uruguay, Venezuela
         ]
     - Other (R9):
@@ -215,11 +216,11 @@
         ar6: R10LATIN_AM
         countries: [
           Antigua and Barbuda, Argentina, Aruba, Bahamas, Barbados, Belize,
-          Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador,
+          Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Curaçao, Dominican Republic, Ecuador,
           El Salvador, French Guiana, Grenada, Guadeloupe, Guatemala, Guyana, Haiti,
           Honduras, Jamaica, Martinique, Mexico, Nicaragua, Panama, Paraguay, Peru,
           Puerto Rico, Saint Kitts and Nevis, Saint Lucia,
-          Saint Vincent and the Grenadines, Suriname, Trinidad and Tobago,
+          Saint Vincent and the Grenadines, Sint Maarten (Dutch part), Suriname, Trinidad and Tobago,
           United States Virgin Islands, Uruguay, Venezuela
         ]
     - Middle East (R10):