--- a/docs/Makefile
+++ b/docs/Makefile
@@ -153,6 +153,6 @@ doctest:
 	      "results in $(BUILDDIR)/doctest/output.txt."
 
 apidocs:
-	sphinx-apidoc -f -o . ../fiona
+	sphinx-apidoc-3 -f -o . ../fiona
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."