diff --git a/ChangeLog b/ChangeLog
index 934cb3fb66..4a7c2d9441 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 CHANGES
 =======
+2.4.0
+-----
+* make attribute a child of named thing
+* add id to ontology class
+
 2.3.1
 -----
 * reinstantiate food class with correct prefixes
diff --git a/biolink-model.yaml b/biolink-model.yaml
index ba4fcae678..01e7ab6729 100644
--- a/biolink-model.yaml
+++ b/biolink-model.yaml
@@ -5,7 +5,7 @@ license: https://creativecommons.org/publicdomain/zero/1.0/
 
 # Version should be kept in sync with primary Git repository release tag
 
-version: 2.3.1
+version: 2.4.0
 
 
 ## ------------
diff --git a/setup.cfg b/setup.cfg
index e78e781343..525d1297d7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,7 +1,7 @@
 [metadata]
 name = biolink_model
 description = 'A high level datamodel of biological entities and associations'
-version = 2.3.1
+version = 2.4.0
 url = https://github.com/biolink/biolink-model
 author = Harold Solbrig
 author-email = smoxon@lbl.gov
diff --git a/setup.py b/setup.py
index f1ac90c2ce..a017905f3d 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
     REQUIREMENTS = FH.readlines()
 
 NAME = 'biolink-model'
-VERSION = '2.3.1'
+VERSION = '2.4.0'
 DESCRIPTION = 'Biolink Model: A high level datamodel of biological entities and associations'
 URL = 'https://github.com/biolink/biolink-model'
 AUTHOR = 'Deepak Unni', 'Sierra Moxon'