diff --git a/.gitmodules b/.gitmodules
index e2fb864..0b07f19 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -22,3 +22,6 @@
 [submodule "book/external/JupyterBook-Patches"]
 	path = book/external/JupyterBook-Patches
 	url = https://github.com/TeachBooks/JupyterBook-Patches.git
+[submodule "book/external/Download-Link-Replacer"]
+	path = book/external/Download-Link-Replacer
+	url = https://github.com/TeachBooks/Download-Link-Replacer.git
diff --git a/book/external/Download-Link-Replacer b/book/external/Download-Link-Replacer
new file mode 160000
index 0000000..d8b40ef
--- /dev/null
+++ b/book/external/Download-Link-Replacer
@@ -0,0 +1 @@
+Subproject commit d8b40efb145a01737c677e638a30a8bbefbaa775