diff --git a/noxfile.py b/noxfile.py
index 10198164..8f7a6e6e 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -41,4 +41,4 @@ def docs(session):
     session.chdir("docs")
     if os.path.exists("_build"):
         shutil.rmtree("_build")
-    session.run("sphinx-build", ".", "_build/html")
+    session.run("sphinx-build", "-b", "dirhtml", ".", "_build/html")