diff --git a/.gitignore b/.gitignore
index 72e7656..925115b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@
 !/phpstan.neon
 !/phpunit.xml.dist
 !/scripts/
+!/slides/
 !/tools/
 !/web/modules/custom/
 !/web/sites/default/environments/settings.*.php
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..8b4b9eb
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "slides/working-with-workspace"]
+	path = slides/working-with-workspace
+	url = https://github.com/opdavies/slides-working-with-workspace