diff --git a/Makefile b/Makefile
index 96dfac80..1345a964 100644
--- a/Makefile
+++ b/Makefile
@@ -13,8 +13,7 @@ setup: ## Install development dependencies
 	uv run pre-commit install
 
 docs: ## Re-generate documentation
-	-rm -r docs/modules/generated
-	uv run $(MAKE) -C docs clean html
+	uv run $(MAKE) -C docs html
 
 doctest: docs ## Run documentation tests
 	uv run $(MAKE) -C docs doctest
diff --git a/docs/Makefile b/docs/Makefile
index 4b47546d..28028b42 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -2,7 +2,7 @@
 
 # You can set these variables from the command line.
 PREPROCESS    = sphinx-apidoc
-SPHINXOPTS    = -W
+SPHINXOPTS    = -W -j auto
 SPHINXBUILD   = sphinx-build
 SOURCEDIR     = .
 BUILDDIR      = _build