diff --git a/.gitmodules b/.gitmodules
index 06bea7c..9d9a0dc 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "themes/blackburn"]
 	path = themes/blackburn
 	url = https://github.com/yoshiharuyamashita/blackburn
+[submodule "blackburn"]
+	path = blackburn
+	url = https://github.com/yoshiharuyamashita/blackburn
diff --git a/blackburn b/blackburn
new file mode 160000
index 0000000..330aafa
--- /dev/null
+++ b/blackburn
@@ -0,0 +1 @@
+Subproject commit 330aafa107956b9bb6c97c017698de8e51ee1c64
diff --git a/themes/blackburn b/themes/blackburn
new file mode 160000
index 0000000..330aafa
--- /dev/null
+++ b/themes/blackburn
@@ -0,0 +1 @@
+Subproject commit 330aafa107956b9bb6c97c017698de8e51ee1c64