diff --git a/how to update submodules.txt b/how to update submodules.txt
new file mode 100644
index 0000000..67363bc
--- /dev/null
+++ b/how to update submodules.txt	
@@ -0,0 +1,3 @@
+git submodule update --remote --merge
+
+https://stackoverflow.com/questions/5828324/update-git-submodule-to-latest-commit-on-origin