diff --git a/setup.cfg b/setup.cfg
index 401504c..1ba72f1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -36,7 +36,7 @@ console_scripts =
 
 [options.package_data]
 case_utils = py.typed
-case_utils.ontology = *.ttl
+case_utils.ontology = *.ttl ontology_and_version_iris.txt
 
 [flake8]
 # https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html#flake8