diff --git a/.gitmodules b/.gitmodules
index aba78f6b5..178ea35a3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "home-assistant-polymer"]
 	path = home-assistant-polymer
 	url = https://github.com/home-assistant/home-assistant-polymer
+	branch = dev