diff --git a/update.sh b/update.sh
index 5d6fdd6..7c8b720 100644
--- a/update.sh
+++ b/update.sh
@@ -26,7 +26,8 @@ function look_for_update() {
       echo "Checkout master for $1"
       git submodule update --init -- "$1"
       cd "$1"
-      git checkout master
+      defaultbranch=$(git symbolic-ref refs/remotes/origin/HEAD | sed 's@^refs/remotes/origin/@@')
+      git checkout "$defaultbranch"
     fi
 	fi
 }