diff --git a/CHANGELOG.md b/CHANGELOG.md
index 82da01587..d05e830fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@ and the versioning aims to respect [Semantic Versioning](http://semver.org/spec/
 - term tracker annotation (#1913)
 - licence provider, licensee, has licence provider, permits (#1925)
 - has aggregation type, has time stamp alignment (#1944)
+- study descriptor (#1950)
 
 ### Changed
 - gams -> General Algebraic Modeling System (#1889)
diff --git a/src/ontology/edits/oeo-model.omn b/src/ontology/edits/oeo-model.omn
index 4d27e6ec6..5b4555b80 100644
--- a/src/ontology/edits/oeo-model.omn
+++ b/src/ontology/edits/oeo-model.omn
@@ -3680,6 +3680,19 @@ pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1791",
         OEO_00360020
     
     
+Class: OEO_00390064
+
+    Annotations: 
+        OEO_00020426 "add:
+issue: https://github.com/OpenEnergyPlatform/ontology/issues/1943
+pull request: https://github.com/OpenEnergyPlatform/ontology/pull/1950",
+        <http://purl.obolibrary.org/obo/IAO_0000115> "A study descriptor is a data descriptor that allows the annotation of study information within a scenario bundle by means of keywords from ontological terminology.",
+        rdfs:label "study descriptor"@en
+    
+    SubClassOf: 
+        OEO_00000119
+    
+    
 Individual: OEO_00000049
 
     Annotations: