diff --git a/beeref/documentation/__init__.py b/beeref/documentation/__init__.py
new file mode 100644
index 0000000..42348b9
--- /dev/null
+++ b/beeref/documentation/__init__.py
@@ -0,0 +1,3 @@
+# Reading files in this directory with importlib.resources.files with
+# Python 3.9 requires an __init__.py file here. Later version are fine
+# without.