diff --git a/pyproject.toml b/pyproject.toml
index 9a90181..dffea4a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 requires-python = ">=3.9"
 name='cpnest'
 description='CPNest: Parallel nested sampling'
-dynamic=['version']
+dynamic=['version', 'classifiers']
 dependencies=['numpy','scipy','matplotlib','corner','tqdm']
 authors=[{name='Walter Del Pozzo', email='walter.delpozzo@ligo.org'},
         {name='John Veitch', email='john.veitch@ligo.org'}]