diff --git a/book/external/Sphinx-Named-Colors b/book/external/Sphinx-Named-Colors
index 0f1231c..8e47df5 160000
--- a/book/external/Sphinx-Named-Colors
+++ b/book/external/Sphinx-Named-Colors
@@ -1 +1 @@
-Subproject commit 0f1231c38451ca29c5e9509bb8c3098a2865ceb3
+Subproject commit 8e47df55cc6258a951716fad1bb58e2e70e8a168