diff --git a/pyproject.toml b/pyproject.toml
index c4b5af6..081278d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -203,6 +203,7 @@ convention = 'google'
 #
 # Find all (sub-)modules of the Python package
 [tool.setuptools.packages.find]
+include = ['audeer*']
 
 # ----- setuptools_scm ----------------------------------------------------
 #