diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4271c423..97f5f7add 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,12 @@ Here is a template for new release sections
 ## [_._._] - 20XX-MM-DD
 
 ### Added
--
+- monetary price and currency (#331)
+- market exchange (#341)
+- trader (#377)
+- price request and marginal cost (#376)
+- cost (#268)
+- commodity (#339)
 ### Changed
 -
 ### Removed
diff --git a/src/ontology/edits/oeo-social.omn b/src/ontology/edits/oeo-social.omn
index cb0de71c4..22e08444e 100644
--- a/src/ontology/edits/oeo-social.omn
+++ b/src/ontology/edits/oeo-social.omn
@@ -172,6 +172,9 @@ ObjectProperty: OEO_00000510
 ObjectProperty: OEO_00000522
 
     
+ObjectProperty: OEO_00040010
+
+    
 ObjectProperty: OEO_00140008
 
     Annotations: 
@@ -269,6 +272,9 @@ Class: <http://purl.obolibrary.org/obo/BFO_0000038>
 Class: <http://purl.obolibrary.org/obo/BFO_0000141>
 
     
+Class: <http://purl.obolibrary.org/obo/UO_0000000>
+
+    
 Class: OEO_00000045
 
     Annotations: 
@@ -662,6 +668,36 @@ https://github.com/OpenEnergyPlatform/ontology/pull/639",
         <http://purl.obolibrary.org/obo/BFO_0000023>
     
     
+Class: OEO_00040003
+
+    Annotations: 
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A monetary price is an economic value that describes the amount of money requested, expected, required or given in exchange for something else.",
+        <http://purl.obolibrary.org/obo/IAO_0000119> "fibo-fnd-acc-cur:MonetaryPrice",
+        <http://purl.obolibrary.org/obo/IAO_0000233> "https://github.com/OpenEnergyPlatform/ontology/issues/331
+https://github.com/OpenEnergyPlatform/ontology/pull/640",
+        rdfs:label "monetary price"@en,
+        rdfs:seeAlso "https://spec.edmcouncil.org/fibo/ontology/FND/Accounting/CurrencyAmount/MonetaryPrice"
+    
+    SubClassOf: 
+        OEO_00140012,
+        OEO_00040010 some OEO_00040004
+    
+    
+Class: OEO_00040004
+
+    Annotations: 
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A unit which is a measure of the medium of an exchange value, defined by reference to the geographical location of the monetary authorities responsible for it.",
+        <http://purl.obolibrary.org/obo/IAO_0000119> "fibo-fnd-acc-cur:Currency",
+        <http://purl.obolibrary.org/obo/IAO_0000233> "https://github.com/OpenEnergyPlatform/ontology/issues/331
+https://github.com/OpenEnergyPlatform/ontology/pull/640",
+        rdfs:label "currency"@en,
+        rdfs:seeAlso "https://spec.edmcouncil.org/fibo/ontology/FND/Accounting/CurrencyAmount/Currency"
+    
+    SubClassOf: 
+        <http://purl.obolibrary.org/obo/UO_0000000>
+    
+    
+
 Class: OEO_00040005
 
     Annotations: 
@@ -712,6 +748,7 @@ https://github.com/OpenEnergyPlatform/ontology/pull/642",
     
     SubClassOf: 
         OEO_00140012
+