diff --git a/Makefile b/Makefile
index 1963498..19e612f 100644
--- a/Makefile
+++ b/Makefile
@@ -22,6 +22,7 @@ local:
 notebook: env
 	. env/bin/activate && ipython kernel install --user --name=venv && jupyter notebook
 
+.PHONY: docs
 docs:
 	cd docs && sphinx-build -b html . build