diff --git a/checkout-master.sh b/checkout-master.sh
new file mode 100755
index 0000000..8626c9c
--- /dev/null
+++ b/checkout-master.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+cd ..
+
+for d in */; do
+    cd "$d"
+    FILE=build
+    if [ -d $FILE ]; then
+        git checkout master
+    fi
+
+    cd ..
+done
+
+cd installation
+./update.sh
\ No newline at end of file