diff --git a/.gitmodules b/.gitmodules
index b05a5da..d1f5f7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "book/external/template"]
 	path = book/external/template
 	url = https://github.com/TeachBooks/template.git
+[submodule "book/external/deploy-book-workflow"]
+	path = book/external/deploy-book-workflow
+	url = https://github.com/TeachBooks/deploy-book-workflow.git
diff --git a/book/external/deploy-book-workflow b/book/external/deploy-book-workflow
new file mode 160000
index 0000000..8b639d5
--- /dev/null
+++ b/book/external/deploy-book-workflow
@@ -0,0 +1 @@
+Subproject commit 8b639d5260cab1deecbf2809e035b7e16784deb8