diff --git a/.gitmodules b/.gitmodules
index a6d571321..178ea35a3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "home-assistant-polymer"]
 	path = home-assistant-polymer
 	url = https://github.com/home-assistant/home-assistant-polymer
-	branch = hassio
+	branch = dev