diff --git a/.gitmodules b/.gitmodules
index 9334633..aa7d96a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "roles/ssh"]
 	path = roles/ssh
 	url = https://codeberg.org/ansible/ssh.git
+[submodule "roles/swap"]
+	path = roles/swap
+	url = https://codeberg.org/ansible/swap.git
diff --git a/README.md b/README.md
index d509ca2..df7b66b 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,11 @@ using this playbook), and desk`top`.
 
 ### Working with roles (git submodules)
 
+Add a new role as a git submodule (standing in the playbook root):
+```
+$ git submodule add https://codeberg.org/ansible/dotfiles.git roles/dotfiles
+```
+
 Update all the roles from their respective remotes:
 ```
 $ git submodule foreach git fetch
diff --git a/roles/swap b/roles/swap
new file mode 160000
index 0000000..90a04b6
--- /dev/null
+++ b/roles/swap
@@ -0,0 +1 @@
+Subproject commit 90a04b68bdcfcfd7da947d7a68f98dcaca5fb098