diff --git a/Makefile b/Makefile
index b758d1f..b13d056 100644
--- a/Makefile
+++ b/Makefile
@@ -151,6 +151,10 @@ doxygen: clean
 	@rm -rf doxygen
 	@doxygen Doxyfile
 
+### generate phpDocumentor documentation
+phpdoc: clean
+	@docker run --rm -v $(PWD):/data -u `id -u`:`id -g` phpdoc/phpdoc
+
 ### generate HTML documentation from Markdown pages with MkDocs
 htmldoc:
 	python3 -m venv venv/