diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..0814d51
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "x-tags/core"]
+	path = x-tags/core
+	url = https://github.com/x-tag/core.git
+[submodule "x-tags/spinner"]
+	path = x-tags/spinner
+	url = https://github.com/x-tag/spinner.git
diff --git a/x-tags/core b/x-tags/core
new file mode 160000
index 0000000..7f52c38
--- /dev/null
+++ b/x-tags/core
@@ -0,0 +1 @@
+Subproject commit 7f52c3847efaf6ff867581c9cd33d324a21f0276
diff --git a/x-tags/spinner b/x-tags/spinner
new file mode 160000
index 0000000..763065b
--- /dev/null
+++ b/x-tags/spinner
@@ -0,0 +1 @@
+Subproject commit 763065b346bcc88fa8168038814ab282fc16e8fe