diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0cdb7de09..870a9fc0a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@ and the versioning aims to respect [Semantic Versioning](http://semver.org/spec/
 ## [2.X.X] - 20XX-XX-XX
 
 ### Added
-- economic instrument, voluntary agreement, regulatory instrument, information instrument, education instrument (#1786)
+- economic instrument, voluntary agreement, voluntary agreement instrument, regulatory instrument, information instrument, education instrument (#1786)
 
 ### Changed
 - effort sharing, feed-in tariff, levy, market premium (#1786)
diff --git a/src/ontology/edits/oeo-social.omn b/src/ontology/edits/oeo-social.omn
index 843a7117d..b6e99ca7d 100644
--- a/src/ontology/edits/oeo-social.omn
+++ b/src/ontology/edits/oeo-social.omn
@@ -835,6 +835,18 @@ pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1786",
         OEO_00140151
     
     
+Class: OEO_00010461
+
+    Annotations: 
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A voluntary agreement instrument is a policy instrument that uses voluntary instruments between a government (institution) and one or more private institutions. The agreement's goal is to ensure transformative measures by the participating private institutions."@en,
+        <http://purl.obolibrary.org/obo/IAO_0000233> "issue: https://github.com/OpenEnergyPlatform/ontology/issues/1545
+pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1786",
+        rdfs:label "voluntary agreement instrument"@en
+    
+    SubClassOf: 
+        OEO_00140151
+    
+    
 Class: OEO_00020015