diff --git a/pyproject.toml b/pyproject.toml
index 2645622..e51b1ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -215,6 +215,7 @@ convention = 'google'
 #
 # Find all (sub-)modules of the Python package
 [tool.setuptools.packages.find]
+include = ['audplot*']
 
 # ----- setuptools_scm ----------------------------------------------------
 #