diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..fbe6f44
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "hut-cli"]
+	path = tools/hut-cli
+	url = https://git.sr.ht/~emersion/hut
+[submodule "scdoc"]
+	path = tools/scdoc
+	url = https://git.sr.ht/~sircmpwn/scdoc
diff --git a/tools/hut-cli b/tools/hut-cli
new file mode 160000
index 0000000..7c5b5e5
--- /dev/null
+++ b/tools/hut-cli
@@ -0,0 +1 @@
+Subproject commit 7c5b5e5aee0a033c4d4815449746de123caedcd8
diff --git a/tools/scdoc b/tools/scdoc
new file mode 160000
index 0000000..afeda24
--- /dev/null
+++ b/tools/scdoc
@@ -0,0 +1 @@
+Subproject commit afeda241f3f9b2c27e461f32d9c2a704ab82ef61