diff --git a/.gitmodules b/.gitmodules
index 8705956..2cbefa8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "themes/icarus"]
 	path = themes/icarus
 	url = https://github.com/wgkassem/hexo-theme-icarus.git
+        branch = night4