diff --git a/.gitmodules b/.gitmodules
index f76fc05..6dc0128 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -19,6 +19,7 @@
 [submodule "book/external/Download-Link-Replacer"]
 	path = book/external/Download-Link-Replacer
 	url = https://github.com/TeachBooks/Download-Link-Replacer.git
+        branch = manual_docs
 [submodule "book/external/Sphinx-Grasple-public"]
 	path = book/external/Sphinx-Grasple-public
 	url = https://github.com/TeachBooks/Sphinx-Grasple-public.git